{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328108",
    "entityType": "User",
    "nonce": "0x48a931c4ef2d46047fcf68996e9a3cb7cce0052a10445539c988219ddf90c07e",
    "signature": "0x52c83953b3654ae1efa5b6a6f9edf796b4c48aeac53b18c20c1f89079d51674e75d358da912439be2187fbed0310634401a8b53805854288db346f069892ceec1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}