{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd71d3765a077617dcb902b9b5e5b7841547dadbd9ecd901147455eb6fe7a2453",
    "signature": "0x1f3b9ac93afb3c00a0dac342cacc199fc9b9dfe37fc349f8043abfcb5c99a57606164faec25953cc2842a90526c7b11f1ba2c68b27c22557798ae659da96345b1b",
    "signer": "0x4741C2a8cBEBCCDda21BdCdb7939b6FBDd658DF2",
    "userId": "366173993"
  }
}