{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661101608",
    "entityType": "User",
    "nonce": "0x07a532822942dc9458b3dc67a3b26067baa0253cc19df1d5ea10a9db0d7a29c6",
    "signature": "0xd12cc049d36b8d3f6949154eff0b16ecaa8c0a06b75010c343aa74a0e7c9add26d7e8cdd65773e1f9624b8801f7e208a97e67542b0d552eee6cf1340a32b82831c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}