{
"manageEntity": {
"action": "Save",
"entityId": "917874798",
"entityType": "Track",
"nonce": "0x9e1f621812036093b181ccd2fd41d4f33bf2532437ae13d3da88acd7ab2ac094",
"signature": "0x0251c279b3adb76b93cf5e86c7505b45ee2d844c9cfdfbafe17279b1dbbc0a2f70d68b01defe7f0df5ced490c8e0dd2d1998690cf46da309fbe67ed3662d6d921c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}