{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5fd7e38707b37cf596bac0b0cda2ffa3585903a82a6399e5c4269407b86efef",
    "signature": "0x23b120ee071289ffb81ed728e9dcc0d0c01e007def05fc53e28dd26ceeeb5e2864085f68f46f341af3e4b0ec7fcba19169095a087fa618bbfa652493a76949871c",
    "signer": "0x20d1dD7B03502435749c81B4a2CE4D072E6EE371",
    "userId": "940185220"
  }
}