{
  "manageEntity": {
    "action": "Update",
    "entityId": "422386609",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0058422675fe1859c31991de74e2235a2101926d6e6c5f39a998ae7dd2de9aa7",
    "signature": "0x353e94ab2badec0791f8ac9cd9db446364375fb59a7e619d7ca71f8e95ca582e09fe008e4a56ad329b6e163575dad3121baf3841a6a3c4921ce4da78f31a86cd1c",
    "signer": "0x5916ed4A9f9E17f440272647226A98029dAea9FE",
    "userId": "422386609"
  }
}