{
  "manageEntity": {
    "action": "Save",
    "entityId": "1399037514",
    "entityType": "Track",
    "nonce": "0x613d95acc8af55960c24b3b98be2208b31356cdb5e56bd4661986e9490de2384",
    "signature": "0x9fff00379aacbb9451fc30e990bf64f36662c9b0196de73819726c2c77aff2656e5f0de13719af87725fe7678166322bf6cca7b08700dabd00719fdc4e5f0b081c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}