{
"manageEntity": {
"action": "Save",
"entityId": "1495360439",
"entityType": "Track",
"nonce": "0x333488064a958234a05b21a0fb92fd6bb40115fecb41f2376bf671763556c2fc",
"signature": "0x7c8880940b9c96d5d387c1f78d109821b2a6f69950f543806e42ce4160c35b9b21c220d28b9fdea857e336e38906177f9b4d30b4ec851e32b5afdb180eba91d91c",
"signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
"userId": "728570067"
}
}