{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186552212",
    "entityType": "Track",
    "nonce": "0x4cf3101bed296bd88c111883f4512a779cf2607415521377c74bd71019132eda",
    "signature": "0xc83ba3d3fb7638eb896cc779116db8bef5f75a9a23c99e79a667b26ca04302682160ca5668ee95b7645aea205c6ba9feada02a4a619a12dbb1ab48e653e9fd9e1c",
    "signer": "0x253047c0af4Fc72D6658Bc16df0b3FE0dB459513",
    "userId": "186198383"
  }
}