{
  "manageEntity": {
    "action": "Update",
    "entityId": "886725809",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7560b189f224c8b0430af4f6f379e249d5128dfa3dba6d767ae93f3121582898",
    "signature": "0xd1211a357626273a36420c30752c0b426549ab23826a2deb56e94211bc0de96b2da2ef327a176ef88d8cbb893a43b263b231e1cf8bb3597e8fbda1f4c8c5883b1b",
    "signer": "0x3B668D03B0741dEa82c23c2d4c43AECaDBfc4902",
    "userId": "886725809"
  }
}