{
  "manageEntity": {
    "action": "Save",
    "entityId": "62420896",
    "entityType": "Track",
    "nonce": "0x36e4324a28f79874df50f28efd8009d9d6e55f88f06f7b90ebcf10bacaefe535",
    "signature": "0xbd14fb6894a08c9a6c57a9d1cba73fdc44402380172c893d9a7feddb3048e2dd25bef74ecd7411e96f4db86b9a46749d701640f279f02d9e7321f279f90e15fb1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}