{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381737",
    "entityType": "User",
    "nonce": "0x6b0ecc01aa902722d330417ee013f92b39537d1cca2009bfd62edc5643ab34ba",
    "signature": "0x99981eba7915026e37842e9d322ea70152e12d2d7576fa4a1d1c7defaa8f76840288b7e880cfeb3fe50554defda1e2d043cbf64b3a60ac67578bf8eb68a1a6391c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}