{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x94358272d4963f001e3cda912cd9bd1f184923a351e14170a188f7f5b174d0db",
    "signature": "0xc307c0cbe20449310339ba42075d2b068bc15872c0e794145ccf4d7695100063703704b9f1e50a0d715d2e96400c4949fd432e19c60f13bce58540108f846c761b",
    "signer": "0xc3FA9e1bAe2e9cD7A87f8f3D108C015990f5dE4A",
    "userId": "998418410"
  }
}