{
  "manageEntity": {
    "action": "Save",
    "entityId": "1486706684",
    "entityType": "Track",
    "nonce": "0x0d5c694369fd964445ce78a2bc065826e627e0a3be0bdffd4efd752e10f4d506",
    "signature": "0xd4c9e9cd295eab6c6c0bafa4c4309c9edb4d81817465e200acc1a90410fda8c64138a05914b5080a8592606862293aae0505d3831a588e1537bc7ad4f866f39b1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}