{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1408945",
    "entityType": "User",
    "nonce": "0xe4c6951d066d50664c4adc383e16c5f4640930df0ed2c58c9da05236b060b37c",
    "signature": "0xcefb4a47b1408f72ce0e5274669d8cf82c8612f7d5c1aa08151e0ca69de649cc784cba5819c2a5056f8af242c9df4055b4bebc1dc6eb400432848c8e313935e21c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}