{
  "manageEntity": {
    "action": "Save",
    "entityId": "1262807956",
    "entityType": "Track",
    "nonce": "0x2ed8959c853892def28f4b46b75930be692b188c97b9a63c753bc67220765391",
    "signature": "0xeb9d20553398cb6a05d6af1153fd22ae86e8161a6470d834a25ad2f3a3d809db039f8ffe3c31d41451767d4d55c0ea15035ef013f4bb7460dda1d46a1e0b67d91b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}