{
  "manageEntity": {
    "action": "Save",
    "entityId": "761308786",
    "entityType": "Track",
    "nonce": "0x38dd8212034e362256d45177a835223a309964d8fbc751e623de42c23f00cb5a",
    "signature": "0x3f406a649647150bc4ed67a2f53098b7110e5a7e7d3edb144a82c21b9ab7a8c67c2d53a3bf1235ed6e679147995ba8eff1a3c4ff1104cde8e71bebe8d49db8301b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}