{
  "manageEntity": {
    "action": "Update",
    "entityId": "392939712",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6dec616c11a6c90c479a35b3b67c8037c1928603d3cd0409d99e9d70a46c3e71",
    "signature": "0x064b7c28d6e06cbebd198eefae3e17876ffa7f2c464388849a20bcec457d4b8565bb03ffe055513a940e00a95fffc2288ebc2a96b2fe45dadf5934e3acc49e001b",
    "signer": "0x5C59a6bBDEd7f60fD9a5fF6cf08adD6e70687f2A",
    "userId": "392939712"
  }
}