{
  "manageEntity": {
    "action": "Save",
    "entityId": "86694064",
    "entityType": "Track",
    "nonce": "0x8ca3b86a3c8596735fa659b5c4320fe417866c034d908e6de28fd9f917694251",
    "signature": "0xc4a0fa5eaab727d9c0e2843bf67acca423b61679a455edfa0261a757b67c6faa15bce4ace08aa0a40c8faf7d99a1782004ef0d3b1f4b2c24f5570ef28bbc361b1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}