{
"manageEntity": {
"action": "Save",
"entityId": "2015347625",
"entityType": "Track",
"nonce": "0x17819db4cedf3e5cf8a78bd1c80aadd4fceb2973bf9e2f3ba39ba43887567cb6",
"signature": "0x318a3ac0bdb39c4c19a29126f16b7ab7a4145da05e58504922ffdc51b19e2c542776919ee18c8ad51ad74ca09964b2af5b4dcaae01568a190c2c194f6afe224e1b",
"signer": "0xB1F7c19dc841aeAe6fbb5808f71BdE7094ce627E",
"userId": "461761656"
}
}