{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "507170227",
    "entityType": "User",
    "nonce": "0x78f07f440413534c0287786691de19e4fb323b7f7efbe9f9807e209da00f131e",
    "signature": "0xac233fe195f7e2f89326332d1362cc114117e60aed61d81ce557aa6832988d963ea6004a05c7055552cf5e34166e16e53cb7c0a5d4659f8758e4ddd03107673c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}