{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511642",
    "entityType": "User",
    "nonce": "0x41f40df4e22ba10f19b28531ba19fd3293d695faef579ffae3a1863e084c6798",
    "signature": "0xe44f0fa6d0cbc44a458839a62dc859e55bb3552349fc57c4070335443b3bf2cd0fed97cbb5fcbe4523ea228eb7eef6d91033984ff705502af8c5c9f87e6314751b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}