{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75700",
    "entityType": "User",
    "nonce": "0x2d59e19afd979efb9c623b54582b74b5b555d00dda49001acac9fe3afc0ae630",
    "signature": "0xf3731faf796531cc885ad40478f7b2dbd9ec0768ed12a5463ee164884e3e5bfb29eaf60e51d556a0cff5c442feb2a08e61ed58b3c0b96cf9047cd385b4f68abc1c",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}