{
  "manageEntity": {
    "action": "Update",
    "entityId": "757047353",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5cdd52547407a6d1786c9feeb40044c302dc53bc3fa7dc675f4e0c7c153ce967",
    "signature": "0xc013afb9af9f525ca1a94cb9b00d7499f78329d988586e7b29438d02aac710276b78476658bd0ddaae0d3da9c1aca359dff3f111902d489ff44c25db42a43ad51c",
    "signer": "0x811cFd0297c116966284Bde337C5e1262690B266",
    "userId": "757047353"
  }
}