{
  "manageEntity": {
    "action": "Update",
    "entityId": "575648795",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a7c0ba643d985ac6e682811c150cca6687a4370e39f521de594a4e34fbcb119",
    "signature": "0xaa1c7338429fd8c7ec02bba46167abeed45a25bd234423ee8865280f636072054964bdaf7a9ea01f114964acc5ffeba2bb7674347ef60b37d958e2454b4c34dc1b",
    "signer": "0x644fF4B4D4582FA06F98090ee11a884870093ACA",
    "userId": "575648795"
  }
}