{
  "manageEntity": {
    "action": "Update",
    "entityId": "308623477",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragmyuldj3ko2l5m7ypgocoyq7osncrz6nf3mivas3uijdugsjtm5q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1647181557}]}}}",
    "nonce": "0x8d9556026c7b02e23bd135ed958e2338724dfb41aba726216d5210c7ae7d2d53",
    "signature": "0x89b958eba12fed83bf204b46d7ca3c6666927279c39fe006393a66ad8d009222468fce8af3d6992cca1a966dd15aeed66c9ba5660306ad2079841a2a8afade101b",
    "signer": "0x6D743436eC5c0BFbaF82Eb6E5c44B035d345931a",
    "userId": "308623477"
  }
}