{
  "manageEntity": {
    "action": "Save",
    "entityId": "2066981024",
    "entityType": "Track",
    "nonce": "0x366b77246f2df3f0eaa484e5e8d961cfc87b5234873cfeea232b8481c4ee09ad",
    "signature": "0x32ba0c15e01e291e760a0d082bcb0588e0d01f24554a4e3ffd875d69518ffe5f7bc8aa6d0c9c921459523728597852660ec3f03579c6b8ef52a84b8bacd6aad81c",
    "signer": "0x1A748d74Db6424f9EA1Ce41A3A445631765103bc",
    "userId": "799948905"
  }
}