{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73f3823068388a114d8207ac166d841bab209a5dc1729be0043b5bcf2420f1f2",
    "signature": "0xe19960dbd744324714745a433f0134084282e04a2a69d83f99666117caec252f53e77586d916318f4a7ea811cf80566d38a17f6e9e1bf7b14c8f924a2fce1c5f1b",
    "signer": "0xb63A62F1972580dcd51d6A7Ca3a7d5BFE1f4bCEd",
    "userId": "863925144"
  }
}