{
  "manageEntity": {
    "action": "Update",
    "entityId": "773582519",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2486ad4da4eae2915781ebdf938e24e4ada526d873a17deb6a3de4026349102c",
    "signature": "0xea4dd87aabc014bd8634b8a06f53456c800aff29a774d488bd7467f16c4ad4044323e48ea0d54c897db3a98a43a21777b5120cc5b5a8faf9c380bc5aff079abf1b",
    "signer": "0x2DEC37Fc0CC00F458F94c1aDc0666770Aa5c3b66",
    "userId": "773582519"
  }
}