{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "621",
    "entityType": "User",
    "nonce": "0xd0060f0a24d21142419e53e0932d5fc6f107292dee21c2312b5fcaa01725bf8d",
    "signature": "0x86580810cb1b97233ffbdae9ef96d470d4cea195e72045ddb263835bf84e974f251811361bb8a5f14fb3ddee5374ff906ec5dd359b6b513572e066669662e8d71b",
    "signer": "0x9FeC2B9C826d23C9cD13d34D23dEd8E681eD5AC1",
    "userId": "935959282"
  }
}