{
"manageEntity": {
"action": "Save",
"entityId": "994051717",
"entityType": "Track",
"nonce": "0x3b4c5e8d896cb3b5589d36ad88b8a2f3bd555b34d17dea228c83bf3f039c387f",
"signature": "0xc642c060411ab6f1beb90e6d3c545765d30741ad4a736fa8be42ba943240ab7453c5c693ac4a91ba9f2a6b9567b23693a27f548fb7484eecbbe78d402650b3d51c",
"signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
"userId": "317847"
}
}