{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72278",
    "entityType": "User",
    "nonce": "0x30ace4f70b9b9196255052a6ab771057addcd5a2fa3249e22a000e22497d90f1",
    "signature": "0xa755f6c6f0a8c46dcff9e6ef1f067bdc737b5d2dc68ac91ff9e2d80b3c71a0d91871dec62352a3fdcf2761c8353ea55f2c213f7f564430efbed0adf0c46364751c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}