{
  "manageEntity": {
    "action": "Save",
    "entityId": "1839036032",
    "entityType": "Track",
    "nonce": "0x499e916ed0e98284585577646c38b079ad16e1d31dd5b3e2c13b385f65bb49f5",
    "signature": "0x80e3ac5d1439c6fd8c0aa185c7a8df07563b13171774d0d41162e8658a3318eb38bcf55a06ac99d523f6256d433076bcadb5ac9a0fc4310aa03fca810cc5e7801c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}