{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7ae36fa6f2ff6d26deb24562ec20509e8721d05c0e5a5cfd2f7d1b677c8be0e",
    "signature": "0xc05e2976cfa4b232e7ab82047c3e84debd5ab748a6f472084faac914fd084fe10dc2558a8026f6e24994f884afcde18b9d909eef8c73b87aae68821d626841d61b",
    "signer": "0xe862752d5754CA4034035D0c731bA7De15D49Ff5",
    "userId": "108308523"
  }
}