{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "850416615",
    "entityType": "User",
    "nonce": "0x1da78f737311d465afeed7cd2fc26167319860074e07e4d0ff939efcd9596762",
    "signature": "0x54622fd3c6f999471040bee49bfecd344a28c9733c458ffaf4e92e37621d8f0a5b52d6821df3a5c6ee990dfac8d5103c4a6a55671de6729882a51d042f7f66b61b",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}