{
  "manageEntity": {
    "action": "Save",
    "entityId": "1661991586",
    "entityType": "Track",
    "nonce": "0x59ade37cdbe715016997039adab2592193432cae51ce3a10ad2211fe8afdb0bc",
    "signature": "0x0bbe71f0e9b2d9aba42b0f9140941d6df463d98bb5d872a226680d44828e0d417a4b40a84d3af27b85532e0800dfdc4800d4b8892b7998097fac8bdb6222ca361c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}