{
"manageEntity": {
"action": "Save",
"entityId": "1393879954",
"entityType": "Track",
"nonce": "0x0d3e471e952bb5559f393c41651a44059da4d12473e7de3f2ba4b9ca46e3061b",
"signature": "0xb470e2181414266a8471a7c8c28881cfe7c3e512cdd2bf31875c73d5cd4c169a29a17d79f06cfaf192381b1473b12f884710c0783fba3c387944c31c82a184651b",
"signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
"userId": "280440301"
}
}