{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138477",
    "entityType": "User",
    "nonce": "0xda9db3552158875cb8d2c9b06dcf6a9dfa623bc922802109333a2fabeba93283",
    "signature": "0xffb6a3e4b9953cfc326fcf47c2afac38056e3f7142d0a4a1b7f7a46d6cc9a9ac16f55c292137633f88c462792a994cd5920ca70470c632d6fd96912f0700b2b51c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}