{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0xca45e3789b78f7b881346c1c6002df52691b774e4465d1b8b00b6c2c72af4990",
    "signature": "0x0f9394903026a5236d1afda8611d21df92e0ae36dff276bec2193c9138b8ac1b28f5821e53198605d81619329f3bf619f68dc59fe1b9f5b7a4b159901d7a72261b",
    "signer": "0x044FC5a5dDb09Fd969Ac4aa606CddF360FE384dC",
    "userId": "144585121"
  }
}