{
  "manageEntity": {
    "action": "Save",
    "entityId": "2026358184",
    "entityType": "Track",
    "nonce": "0x9109a944229387918832fe45b14c2191a8b1d6caaaa655b0c26f884571d3b318",
    "signature": "0xaadc2e8369f4d3e56252501cb640bb52d3d827a987423107ead8214a574e464220bd32f3d6f041949a3e26d1d230ba2c1932629ce86b427f7a18acbc5c5d7f301c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}