{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "765901034",
    "entityType": "User",
    "nonce": "0x4121dc217576bbfe28f422f5f57102205c138fed7ba0f00cedcdc8e46963733e",
    "signature": "0xadca3ed49d9175b1c0f93ae40167867a3036bfbf3b399c47e88677b60ce7f8ac7f61dd4180538e7e1a9bbae015e6acdfd47a8f069bbbeeee157de67f8ddb9ecb1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}