{
  "manageEntity": {
    "action": "Update",
    "entityId": "662243331",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f1713738b200a832427c234ea372137b8938adea7c457c40a88829a899f1606",
    "signature": "0x201704a1b1402409c74aac979e0866e9f0ea47773c92ce00f3ff229106eb56ed25e843325414fb5a91dfe04b3f514317f46870daceeb7aa954baf9865cf915591c",
    "signer": "0x51972E0caB5c3f736515C360501d18d4eDa83d0C",
    "userId": "662243331"
  }
}