{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069350030",
    "entityType": "Track",
    "nonce": "0xa19a0f3ca931f5d8c21c7cdb5fff127fa534319d4262818d34767d5caf155a91",
    "signature": "0xa5750c154135dac78d3b653e4e3b82077201213b4b44a083b241b5303c1afea63f1393e8bd1b920fe70e344fcc2ecd8936a20de2d00bd3070a044408072d74b51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}