{
"manageEntity": {
"action": "Save",
"entityId": "1430575948",
"entityType": "Track",
"nonce": "0xc4bee381adbf35711943bb93180d4df637fd3cf9a2403ffa9d35e58cfec3bd29",
"signature": "0xe6dc312c8cd94a8cf82f2a8a4c7b1e6b365722b3d8fb43276af48322651c88524da72e9ab4ea0ae65eb83a33a451d30f9635055b61bbb2f9a27aa65b6ce26cae1c",
"signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
"userId": "728570067"
}
}