{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xaa73025451aa9a2bc3dc507950b4c1b17bdc98957baf9c0551cb56c3244d6384",
    "signature": "0xdf515143c5c5fc70ccb623b932fccfce550fb019a702c2b6150d8d9db7d7ac560ed94afb7356ec394b4bf22a48741a46a82233c39edeae62ae57caf1ade5e0f91b",
    "signer": "0xFacA45731f376Ad08B3020679B8e608Cb8731E3C",
    "userId": "234994159"
  }
}