{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x435bd7f940d0ef8cade953b4c138d6d1022e2b0166ec027ccd1055aceee7b1ec",
    "signature": "0x3e8d65e68df75bf6ca471550f132fbf1e39707fa87f16d7d7ec27600f84ed19e2e8f338a35d0af2f91cf7b3546c81b0fbeb402a896dd303cea4f60eecb9c256d1b",
    "signer": "0xf38D06b94526Ad7785149E74802a0195e73dD49d",
    "userId": "678041341"
  }
}