{
  "manageEntity": {
    "action": "Update",
    "entityId": "102369832",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64e9d451cb16985606124be1dca14a7a0cba0a6aab47f505c7e23d6dcbb36e8b",
    "signature": "0xb512c66d97aacb69f5c80bbfdd6c5ef5141217f05fd95c737a374731fc1c8c11390a7852e7541be7ce9d3695595b286cbf875517a4c0426fb23e7b199e930a231c",
    "signer": "0x1187dcD53e5D3Fbb56FEC862304CD0e460A4c74B",
    "userId": "102369832"
  }
}