{
  "manageEntity": {
    "action": "Update",
    "entityId": "328973860",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0f0f0250f403aa138b6e5ec78019730ddb30d2802e41bbc6b29b450cc8781696",
    "signature": "0x48230da02d0f363dbd3c37d5f84e8cdcc450cd466c30b4aacb2335221cfc844f44c7b02ba4a4d5eaff2a88241ab6f4421f671c137656f6b70911f4e00ea759eb1b",
    "signer": "0x8C8dF31EaEF9d2E7e5e0C9Be2f1aD120dB9FE584",
    "userId": "328973860"
  }
}