{
"manageEntity": {
"action": "Save",
"entityId": "790964072",
"entityType": "Track",
"nonce": "0xa74b4bfa18e99879f7902d81c443b899f9f62365397fbd0952d22c5ef0fe17c1",
"signature": "0x8782e2da864c81afe7a3cc79924843bdf3a5c979def40ad2469015bf8e7cf5a952ad52a34a32a110b3f523792ef5ab372f58085cb3ba97151b415db9623b546f1c",
"signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
"userId": "803288761"
}
}