{
  "manageEntity": {
    "action": "Update",
    "entityId": "445239884",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x385ec2269da8b32ebbd25eff89a9555ab72561f90df27221693d3ba95cabcd54",
    "signature": "0xc99f945887f4b9d7c3ab75955c7336998440be24cc717c53a39674f873b11b9f4579b8d954a304c454e89a6e6a8ad1f46157b61975687f12fba42f131b8c08e51b",
    "signer": "0xFd97e7840e2361807A097a179fFa5966097d5ec3",
    "userId": "445239884"
  }
}