{
  "manageEntity": {
    "action": "Update",
    "entityId": "191858079",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraca72ecplojwroum5xi73g37qgjspqfiwfbdiwjh3idhjkqx2bylq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1524705669}]}}}",
    "nonce": "0x6aa5288fe888c77441bd58de74eeb27f5a88d7be84b449b4513bf260d938592a",
    "signature": "0xa95a8750b8f7d5228af41c07e82b978e5fc5570b5098bbec8dfb36ae229cb3f46ac8c34b0ec900aebcb0e82f267d2103a32bc7bdd565b32cbb44bc600f16a4931c",
    "signer": "0xA6c15Ea9c3023d20A788742175fCE7EAa021F08C",
    "userId": "191858079"
  }
}