{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078211771",
    "entityType": "Track",
    "nonce": "0x3d34391b6d99c43ee24554eade842ecceacb06b303f1ef75dcb43c6bce0a3760",
    "signature": "0xedad5946d8d13ca6c09454f333a956cebd0e8fd9a86fb7c0cd46334252add4db1e1d9bf18c67860d4b5e3cc5097679beae83c9dda90c9183761426ef76c80c341c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}