{
"manageEntity": {
"action": "Save",
"entityId": "1912641587",
"entityType": "Track",
"nonce": "0x82b2bdeb2b11c7107f654a7d34080ed469e20939b1902c5ceeb8af5e24745087",
"signature": "0xe4019f0d3eeb4679894f2a83466a8c23bb37f5c24c94cb245ef0cf7ef939cbdb478c61d650a9b10787e3642723c0dc7c1d3cbd0f5ee37b9fe5cc5d01c5ef4f951b",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}