{
  "manageEntity": {
    "action": "Save",
    "entityId": "158187642",
    "entityType": "Track",
    "nonce": "1792100832405922232",
    "signature": "0xa79e4aa52fd4eb29e4e2a1fedc63e9b1979fb980d41c82481fcca0c001b53e4d6e74fc0c5770078c215522bf9d44e6b5ece48958e9b9f2f27485cff2eb4a72201b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}