{
  "manageEntity": {
    "action": "Save",
    "entityId": "293533593",
    "entityType": "Track",
    "nonce": "0x70ab08e945fc7e1d2f80692f13735a5d91d859942fb00c519520dfb6b1aa59ce",
    "signature": "0x9ad87ef476ff8fb45353a81c8ed928f130862ce8917a8f969b3b950c30a1817e5e5d676662f947aea2b06dce5510e41f015a30a539eee00ab084d3260a3f372d1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}