Activate an automation

{  "id": "auto_p4n8c2v6x0z3q7w1e5r9t2y6",  "projectId": "proj_tz4a98xxat96iws9zmbrgj3a",  "name": "Welcome series",  "description": "Greets new users and nudges them after a day.",  "status": "active",  "environment": "production",  "definition": {    "version": 1,    "trigger": {      "type": "person_signed_up",      "config": {},      "next": "welcome"    },    "nodes": [      {        "id": "welcome",        "type": "send_push",        "config": {          "title": "Hi {{ person.name | default: \"there\" }}",          "body": "Glad you're here."        },        "next": {          "out": "wait"        }      },      {        "id": "wait",        "type": "delay",        "config": {          "duration": {            "amount": 1,            "unit": "days"          }        },        "next": {          "out": "paid"        }      },      {        "id": "paid",        "type": "condition",        "config": {          "condition": {            "match": "all",            "rules": [              {                "field": "person.entitlements",                "operator": "contains",                "value": "premium"              }            ]          }        },        "next": {          "no": "nudge"        }      },      {        "id": "nudge",        "type": "send_push",        "config": {          "title": "Still thinking?",          "body": "Your trial is waiting."        },        "next": {}      }    ],    "settings": {      "reentry": "once",      "exitOn": [        "$subscription.created"      ]    }  },  "revision": 4,  "hasUnpublishedChanges": false,  "activeVersionId": "auto_ver_s2d6f0g4h8j1k5l9z3x7c1v5",  "triggerType": "person_signed_up",  "activatedAt": "2026-03-05T10:00:00.000Z",  "nextFireAt": null,  "createdAt": "2026-03-04T15:30:00.000Z",  "updatedAt": "2026-03-05T10:00:00.000Z",  "issues": []}

{  "error": {    "type": "invalid_request",    "code": "string",    "message": "string",    "param": "string"  }}

{  "error": {    "type": "unauthenticated",    "code": "invalid_api_key",    "message": "This secret key is not valid."  }}

{  "error": {    "type": "permission_denied",    "code": "permission_denied",    "message": "Insufficient permissions."  }}

{  "error": {    "type": "not_found",    "code": "project_not_found",    "message": "There is no project proj_tz4a98xxat96iws9zmbrgj3a, or this credential cannot use it.",    "param": "projectId"  }}

{  "error": {    "type": "internal",    "code": "internal_error",    "message": "Something went wrong on our side. Try again, and contact support with the Request-Id header if it keeps failing."  }}