{
"manageEntity": {
"action": "Save",
"entityId": "103548",
"entityType": "Track",
"nonce": "0x8c3aefa23433ae8f6f186afdc98d48965ccd77eec17f908f0714f2e255d9c36b",
"signature": "0x7c1559898f353e8fc934bd0d8bfcaf8ec488f192b7faadd60587deecb93c5b5b1e6a5e180f7c77af871a637fbff36bd647c36052edd0d0021885d22b36fbaae51c",
"signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
"userId": "670307808"
}
}