{
  "manageEntity": {
    "action": "Save",
    "entityId": "106008831",
    "entityType": "Track",
    "nonce": "0xd79b4fc747898ea3c1a7dc4df819ab666b956ccc1e5e23bfd1a0645c18abd3b0",
    "signature": "0xbb6a4f6bd0d9348815da0cd68033fe29d3e89ea4e7529c99eaec86c0f90c413062359bcd8337393ffe473e126dc5bf5438c58c7a5864e0dfd25e455be9d485df1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}