{
"manageEntity": {
"action": "Save",
"entityId": "1958565576",
"entityType": "Track",
"nonce": "1792835630880212822",
"signature": "0x5217c33209f9da1231b1d0f2f21ea679dfcad5a8e6a8b4eb4a8fd19fe977a05d5843a98b4f29d0e0a8314ba54872e28d94aeda92e0bfcf4c4d3c6ae745e086981c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}