{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x037ffc2cd2887abf56a06f424f2dfbc848359bae83a1903376489e0c40b6dbed",
    "signature": "0x32feb722abe036a4efc0b307cb7cac94403b028f659c844579240b6b1dafa51110bab9d00722c77a0dc6765523ce4ea14f273faeed645bf2f570fb2b0899af1a1b",
    "signer": "0xCa890ba09b096164ab040247D3eb511DD5cC5f51",
    "userId": "489821062"
  }
}