{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4aa1f7d998b5d3d5ac7c5c5980d55bcca3b49c99ddaf8b778d6829211591d03d",
    "signature": "0xe35488f4fcaa6e8b5565e55c7abff8f3d17362052e0041ee38187ca85a7c469f22883a7e5f4139e721155eeaedf4a2f820ef5508198456b6c065571ffb2d09db1b",
    "signer": "0xE0dF9407B39a8Ec91567DE1940F988b6e37C17F5",
    "userId": "373509365"
  }
}