{
  "manageEntity": {
    "action": "Update",
    "entityId": "647741962",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc6ab2645d809f6d57cb6d530e2d9e80bc00aa70ec632bdd45a2cff3452e2b9a9",
    "signature": "0x07353add461acc6dac8f28d2242b2d6413bd4f246c90ded2f94a2dd4e7605e637c0def065d1abb0f10291eead2c588045a41e00ddef5eae2398078a046c651951c",
    "signer": "0x1c7c291Bf72BA12FfC5efe27b539695863A8fc7f",
    "userId": "647741962"
  }
}