{
  "manageEntity": {
    "action": "Save",
    "entityId": "634547172",
    "entityType": "Track",
    "nonce": "0x7205d849584e6436f63885dafbe539d58d60ca36ce0896bc4c594910c31abba1",
    "signature": "0xc04f3763835616d2b1481eff5130311d607e2197d85ac6ef3ae157c4b01a227842f7a92afc90ff3a07aa3927da14ea9f11fb2662943a04ba438fd9a87ce949f41c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}