{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0xc1760a67aa2877bbe9512f087f51940121dca01af77d49b4f9c2b8f3a2881245",
    "signature": "0xf93af2297ec70743689405e59b0271e3a26f312ad039e06d253779c040c0d4ef3d53ef5619beb23bcc463ef20e54e672ccafb27128cf80783643145a05f81ef51c",
    "signer": "0xA61Ec758eD62E71769712843066E0D2AF592b23d",
    "userId": "556255982"
  }
}