{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb87e1a51b3a2ebf018d4f0ef934f9dc867d2830ab42153ed54e270e7a7d18ac9",
    "signature": "0x25bd6cbff6903aa05f45a2eeb556381ec96c2ee04c31c03f638d4cddadc3d0e35dabd08534930cfdec4ce63f03c4be7894dddef4f711418abf2fe8bf135b99021c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}