{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x9fc3677ae0042abe5eea26b2065b44213eb043ba461587e645db56f0768690cb",
    "signature": "0x4841cddc1ac560a782aa03575871047c91f5022a500956a0a85119adec5324206ab90b7e9f2c006ea98c0d449e1b1b91c3e21e84ede60f09675c6feadc4b8d1c1b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}