{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993104682",
    "entityType": "Track",
    "nonce": "0xeb1ac00578b26b36af346361a2932e0e3b28248ef04b014043db608aa6a1708c",
    "signature": "0x3b527dbd11abe588e82cafc6235e13c9a2658155809a290649beb526ff58ded31d3534a98d65cad129e1d7938b72f218961c2495747b9150ef40c6f59dd85c541b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}