{
  "manageEntity": {
    "action": "Save",
    "entityId": "2032955224",
    "entityType": "Track",
    "nonce": "0xe7b51e8468a5820a27741623dfd1c996b3deeb138cc3b66465c5418fcd8318d8",
    "signature": "0x4f0e8cce876bda26a6629891564c0bf7bc180badf5843a10b0f9fded564fef3e0202f82c21fb0280dc97e86892c37335c94959415a897486f1d9a4c1d1c346c41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}