{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe1ff90fefcf77fd4cd68fba35a46ed4b74623be1f50945db54274c897a4d9afd",
    "signature": "0x092e44345812c23db6844884fd1cdc9763063182ad15ab8595432303be4621d125f6c22cacb092a1c39c45511465a300d7af5fbd3704e21136795db6ceb1d85e1c",
    "signer": "0x8D9fF7c77B40B31De4f985c6a8fE761A42f8C413",
    "userId": "940795349"
  }
}