{
  "manageEntity": {
    "action": "Update",
    "entityId": "444417991",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1fd2fdf838c88b76f8fa480efabfbe10c0855766d0333af3c4879a96a5fe1b0a",
    "signature": "0x8da5197c622b1dcf44ed026050662375b094f7f093710327c55b0604d0884d16253994082b9ff2a0d15347931a420064ecd777fe4b0f6daf9d93bfd9eb3a17d51b",
    "signer": "0xff6CFd78e41Ab6Dcc561c5550474bDBB3Af1A3A9",
    "userId": "444417991"
  }
}