{
  "manageEntity": {
    "action": "Update",
    "entityId": "224019652",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01032464a2cfa54f195d2e6c48555da12308c9c3c3916bd29e6950f5abe874c7",
    "signature": "0x09db48b8a0ab9f3618f99839b15d87c312620d04e102b2ced89666bb5f87c4160b4f8139a0477e3ae85799a3180e48e0adda212bfbf01fecd1a83f7e9d86a1071c",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}