{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060770667",
    "entityType": "Track",
    "nonce": "0x2eb2e05358bf76d39efee71b0937300095afcd21e256d3988bc9a2f55585bdc8",
    "signature": "0x6f0071bdf6c315316617dca17dd5ee7c8bc0d0a987329c7e35cdaad2c6d41e5023b2b3ff193776d22038a7c7b89c6551fc668384408d8d241229ea6abedd87801c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}