{
  "manageEntity": {
    "action": "Update",
    "entityId": "581914163",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8640a3593c8341b8eb882125d216c6c03f482b327053583bea2b6b68cd47aa9c",
    "signature": "0xdb29c679327fcb316b1356bf809db3c342d15c107a1bcd7b95efdbac8a7273b673d4e212bbbf4d11fd47708fd52027126f948249dea8715edc0337f9e119573c1b",
    "signer": "0x0a9F0Bb7f908E12E6fe8C5395104a94e3b16E445",
    "userId": "581914163"
  }
}