{
  "manageEntity": {
    "action": "Update",
    "entityId": "146671017",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe1de916b6a7b3e786315c8b95786028955684ce045530ddc2243478c06d1a5a9",
    "signature": "0x161a9ac7b8f5457dc6cf84a949de007ce96d8fe56451795961cf87282f7adf7b2e600700fadaf4ef9e888d3b032b54a73c8b95e2e6d8256069f4d2cdeb64d32d1c",
    "signer": "0x1858AFF8EcD0C2D3CA6E75F3fe11e31FF7fd2e0B",
    "userId": "146671017"
  }
}