{
  "manageEntity": {
    "action": "Save",
    "entityId": "119265756",
    "entityType": "Track",
    "nonce": "0x28d5665dc675276a96d478341a3f890c5986d1b0a14dcbe7e1589b6c0eae6eaa",
    "signature": "0xcff3fbc448c2c119e1f634136f27599a68812e0eb4e9c83fb1b474864eaa43e730e466edcda3095f7279bb5af0d41279d49b72122422a939e0e55ab6ffc8027c1c",
    "signer": "0xaAB075f1D622286f16eAf63179aa4157DafB1cDf",
    "userId": "850627398"
  }
}