{
  "manageEntity": {
    "action": "Save",
    "entityId": "802112",
    "entityType": "Track",
    "nonce": "0xb26996b252728121fed3d2437175781f87b70d8d8e64e9b4aaf92f9a9d0e83b0",
    "signature": "0xbb298f3e77cd2090305f07f2c30b34ee7335e92c8aa4a705294b279335ca9d310b857816f84226ba2d2f93826c32cada0a0382c0b320ff4ba03f5b0b205a28e11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}