{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923480019",
    "entityType": "User",
    "nonce": "0x588dfac74489568deec4194469d2d4edb38696a9b6ed57a8dffc4f74639d77b8",
    "signature": "0x34dc596c9bc0ba342007776ed0b047c84a3eacc2f9c5dad7a0c247b8ef6407613225c7534e340d4d6cf2c9ee14d7352dbfd619001751ba7e849c4bb6b88226a41b",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}