{
  "manageEntity": {
    "action": "Save",
    "entityId": "1744082756",
    "entityType": "Track",
    "nonce": "0xdb51ab8741d46fe457422229b978667817aec6571c798221e5a45991d766e3bd",
    "signature": "0x58a68810cef88c6b96e7a18592e7f2882858afa2b1f278894526f127bd2879b5692c5eb906c96f91e67e81e77a586befd01e0f3bd237e6058050a3d051b7d00d1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}