{
  "manageEntity": {
    "action": "Save",
    "entityId": "69308",
    "entityType": "Track",
    "nonce": "0xeedbee9e0533460663425bb851020476b175b3c4bf928d9c8bf6050f76756411",
    "signature": "0x4e4c8a09001ee5e0189cfc813be964591d25a4310b00a149ee4313b0806d14ea40b7d6ca0340b9098d9ded1710abe60f6634657dd11bc727412d47d153c79fbb1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}