{
"manageEntity": {
"action": "Save",
"entityId": "1728932439",
"entityType": "Track",
"nonce": "0x8be3dfebec0823b1dc09f42a9e993dfa73bc6f6d3ba87aaaa5a3d9b4a45bb451",
"signature": "0xc6f89153d7f5a961fbc14f41d26748c26d316e6adfc711f3b80d0e33397fb7bc5a0bea9f1c12585397811d718f1155da6a5a8a9f947a44d391ee84997b8caec31c",
"signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
"userId": "489165782"
}
}