{
  "manageEntity": {
    "action": "Update",
    "entityId": "478386822",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9595f45be81343351b940e7a6f79fc210e13ee07626a73cefb64bf9753dd41ea",
    "signature": "0xeb20074ef766aa5dc7a0a39e133c2b3a0ec973fb63334f94b832bef0be675e4455d836e73e2d59291553f8b5b38f1f47982a7b96f6d32b9e60c8179652bc7beb1b",
    "signer": "0x35052aD4A28A710ea964ba6A74c5F5E3d7b8131b",
    "userId": "478386822"
  }
}