{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "817864519",
    "entityType": "User",
    "nonce": "0xb9ab02ebe1001292182a02eeb08bb34c4e3dfc8e5f953e4fa359a86959fbbf87",
    "signature": "0xe743c6d0584a23f8204b38f837a9ec39079994f480fcbfeb58bc9d865f4f4463258a0e423575ea4f04e096069252d9c770d121826e46ac2c72e74994e74708d41c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}