{
  "manageEntity": {
    "action": "Update",
    "entityId": "901122144",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x840f0ba1e405bfbcd59cc6247a737031a89b62e7252cf4d782fd3e2addf9942a",
    "signature": "0x34457f47c044a63c938298dc30beac7c18c373c1f14d5992f840350654fde2e7666089dd66ae5ad7018ebd565f1ee9a9a3d1ade05d6812bff08f5a92c516a6651b",
    "signer": "0xCEE883d0cC7C90bE040Af1f13E5485579E32cb68",
    "userId": "901122144"
  }
}