{
  "manageEntity": {
    "action": "Update",
    "entityId": "928462194",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x38772a8edeb66f413519323c0ac324ba0f94f1f81a586ecd87038e4313231172",
    "signature": "0x64d2394b3a3facdedd2c31deb796978d00ae7ffcf421abe8aae8a42338e4ee1740c5ed8a35f8a60ca9f93fb7f29517693ed4651868981c457795ff7b322b493b1b",
    "signer": "0xa8C7601e0019CF3CA78bb8a037FdDBeF68761B48",
    "userId": "928462194"
  }
}