{
  "manageEntity": {
    "action": "Update",
    "entityId": "76237512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarqhvkwmciwhp6czmwiohqkag5acdakzv6rdkorgieesbf2h3cdhq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1578104125}]}}}",
    "nonce": "0xcb4a0a3869f7c53386744e50c54188380c34a2881afb14df518dfb2485139bf8",
    "signature": "0x4dff880bcde50398f7b345b9979de9942a5a69b84ba101e380c9683d11b2c651134b38d65203d16f781684eebe592a30e81ea4c1b9bd11d6ea51156b2ce288141b",
    "signer": "0x7c2eB52f5ef3861ddC76dB4a1a6e823975c4C537",
    "userId": "76237512"
  }
}