{
  "manageEntity": {
    "action": "Update",
    "entityId": "435421579",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbdca6aaf923a9b980976fa35326b1a07157d02fb7679eca4b69972a4805ef563",
    "signature": "0x1ec02676d72e0d4ea4884bf56bb0ed163d250ac199b7375f16a9cd37439a45dc0985609c703a4bad8632a08bf06a00c96e217571fdccc7fa1541dff7e370acaa1b",
    "signer": "0xf30CF3448b693D98101Be93bdFA1A863ad8023fB",
    "userId": "435421579"
  }
}