{
  "manageEntity": {
    "action": "Save",
    "entityId": "2066060090",
    "entityType": "Track",
    "nonce": "0xebb5b20a6700d4b0ca9f2a766717f13ab4ebb7ea26e7bfb3041cafcae407fa54",
    "signature": "0x25e508646269e9fc03cd878b923340b6d62ae3148e1123fac0f2923771ef5e417a0b9b603a59249adce7d96921224cacc5fb1adf5113d283b4b92911ed8bfbf91c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}