{
  "manageEntity": {
    "action": "Save",
    "entityId": "34121150",
    "entityType": "Track",
    "nonce": "0xbcddd6b2ca8eab2455252396816fbc4a6c821487e2036d426539dbc5099df68b",
    "signature": "0xfe358e8a288dce74f56f68c4cd277263840ec3d99615f16dd762231fea6dab230092e52d4a2bc212e3a7a932d56b32de400b7996cf4ffca3200229459e1e52e91b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}