{
  "manageEntity": {
    "action": "Update",
    "entityId": "581150838",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x13aec944006fde8751e8c91773488e0e7620729606c82c49c74260bc63ed28df",
    "signature": "0xb10da809261ceee0ba2b350e9cd647dfc80cc03b08ceabb12dee14ee5f97cddf36d3b10045d1d2f781d2c00d541cce5bca00a8a5eb2b3b261b99ba214cbd82b31b",
    "signer": "0xf4A636aa9e0132E64ad431686f8E6Cec7E4693F1",
    "userId": "581150838"
  }
}