{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x33615ec0689db40afd41eb1eebc57b9217eeba1283a9549b7f06c676135f5aaa",
    "signature": "0x1d958b4606a27790fed732c7ed36921fae00ce94b7c4e58d3f83a6db6634a1a945b6b360eeef13c6ec5665d59f114094f68bb7165903a3cfd1eeadb82b26e1371b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}