{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7337",
    "entityType": "User",
    "nonce": "0x1d109195d44590043adbe52a88b2c172ddd7da736dd5fd3ac5bbe419924c859c",
    "signature": "0x6b258f23ccef40930c7cc303d8dda1545a0f95fa0dec34c74ae9edb0f6238903152a402463b68c7902bee63b79b2e16ef92b695ecafff825ec947640e8eab8f21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}