{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1422f3c906be4d8a245b3c8cb591a1c5774413f6b9ab562d23aa29038166ba7",
    "signature": "0x7630a5a8efd6e89da91597db4cab745a2b0f981bba22f70928d0a7e49cf2980a24cb3eabb794d2d2cec75958662e25967e3becfbe75bd42b2f406d7365ac09ea1b",
    "signer": "0x38CD387a8CF15E363398728E6749A2259D566866",
    "userId": "923056529"
  }
}