{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211200",
    "entityType": "User",
    "nonce": "0xb1c6cca3d002a7997d58562ad490acb790a1e46a2e4493bf34e046e2741e8462",
    "signature": "0xa31fb55ec5f7c9f080470dd81d128820b2abb86a0d37d6c151edbdbe7e67299f5f1a5d03850509aada3941b8014d2449a453ab85fa50a6e69cf13d78c5bd6fae1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}