{
  "manageEntity": {
    "action": "Update",
    "entityId": "918602404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x70d53ee7c2d93e83fe45db61e4bb961505bc6d4085cf04e976012d3a2d012710",
    "signature": "0xbb468115cabcea987d7339dce4a21f199d79e0e1ce73ccdf9c9ebe469e3d8cbc5d5e537e44421fb3f50288d99c47d5fbcf1a5e5f6f98117728ea6a299ddf44ac1b",
    "signer": "0x9e6Bc923c3B1A420BDAF7b6dd8E4a6Bc51f0DfFC",
    "userId": "918602404"
  }
}