{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfc8345024d6357b4f623d7fc08eed9a763512e0221127cfa6e32e4628e3c80f6",
    "signature": "0xb1fbfb8dbc1d932934ff1e672254f906659cc9ac95a152476214ff491c2b05064e6319165d33b5ad14839194a289747a8473d9ebf18d120656373b7ca29334151b",
    "signer": "0x7880e26a355bef454b3558ACb8f68563AB519B8e",
    "userId": "282839670"
  }
}