{
  "manageEntity": {
    "action": "Save",
    "entityId": "797616196",
    "entityType": "Track",
    "nonce": "0xaf8e76829fcb824c0b90052d1f641b40e8dbcf2a80f18a1342d27582474ea846",
    "signature": "0x77b3c4cddf2b7db243e83f966cb9659614cbb463c2684a96e58ad355f2221ff64dc2a1542f9548f60ec597bbda81368b246ec90acf45f1acf360d7790ca8098c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}