{
  "manageEntity": {
    "action": "Update",
    "entityId": "988717598",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x285d24828ae1b6a45cb937f9a49cce0b9bc936f9ca51c0b2c54126a7f3148d67",
    "signature": "0x74d4aaabefbb03ed5cdff1ce885e74847fe8a99c2b197ee5c782c234380e5b3614bb5ea9d1810d785361070c719ba6696260bc79a265c247108c71d371ea4e9d1b",
    "signer": "0xe8E97b4C447D470F68cB38793d459912695fe3e2",
    "userId": "988717598"
  }
}