{
  "manageEntity": {
    "action": "Update",
    "entityId": "216491227",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6d5df2ebb96d44938681765e1064efaa238bd2a6087b611d939c7ea978f989a",
    "signature": "0xeb3cd4d6eef043695df2572543934966c56b33de3caec36bcf17b0d59709dbb90bdeefab8ba456061253207628c9e9e5f9bf1e2b31db04ca18e88ccd6746f6881b",
    "signer": "0x5E8fb659612aDdEcc9Bc5929d68B9DC2F53C5947",
    "userId": "216491227"
  }
}