{
  "manageEntity": {
    "action": "Update",
    "entityId": "950485788",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x332157726ef5a3b57e53412b09be21357e9f598a47102d6dd59254c132fff0ab",
    "signature": "0x4066e4084816d32fe95e33fb02c0ab851541f7f3990650d1a560fcafe5db19a650a9365382660fc234af9cfb3ea50fbcb9f4c3f165730bd773f7cbebdaeda9ce1c",
    "signer": "0x6CF29C21c9C0b405C773f3605658C095Af4c28EF",
    "userId": "950485788"
  }
}