{
  "manageEntity": {
    "action": "Create",
    "entityId": "1055053721",
    "entityType": "Track",
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    "nonce": "0xcdcfe19c93da58665cae5d40ae7cd981d1a0c76e039726ba276bbd6a6105999c",
    "signature": "0x4226b9fba3c1b934163fb56ec6c8469e3d1a0b8ebb2933e7901aa9003119f50d7d204584c1e47162d9beba9a4990d646d7a5078b84a20478443ad75647c59fc31b",
    "signer": "0xDd0b1E1Ac36008d2Eb670bdf27d60DE0330B298b",
    "userId": "5016987"
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}