{
  "manageEntity": {
    "action": "Update",
    "entityId": "587222186",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x82517bce9223d4b96b28dab765be738d49d22b1158b5949116e2e98534c0e692",
    "signature": "0x0f6e3053808d7110d36d79dd46f1a42fe5f8cfbf779771c0c573951a1a00028d0e60084de1eed88d61f358452ee372b1c45aa527902214dbe942c75c148c600a1b",
    "signer": "0xBc3A9a9317eeA7f35feb992242360A3Bb8D6047b",
    "userId": "587222186"
  }
}