{
"manageEntity": {
"action": "Save",
"entityId": "919694",
"entityType": "Track",
"nonce": "0xd67877c7f3ac1dd2a04230b3fd5b0fa2da050d8f955d77fb337047bd91a03919",
"signature": "0x4e2eeba42b04de584af74dcad94b9d1478201903ee1b733d7aebbe7946c5f831426bc3d5b3c38b57e46390f35b8154be5f07435b86ba36f6723b293b3e9a5e721c",
"signer": "0x2DD5E1DAa8d7fdD8ec6a171B2eE4563FA6EEb0C2",
"userId": "467976"
}
}