{
  "manageEntity": {
    "action": "Update",
    "entityId": "751846296",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradpz7nvj6nnuyaeosrips4vyojgwtx74xh56i7okyz7vdx4yv4mra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":929764100},{\"type\":\"playlist\",\"playlist_id\":1180167363}]}}}",
    "nonce": "0x4a924ce8d2e9db1a670d3643482e2f075b364196adf4e912be207fad9599f1cf",
    "signature": "0x0aad81448c35157cc8cbb361dc4e444cb3b619f2d964a913dd2c454477d5185333dd1f1855e25d2174a98459a57c96d4906c5d88a35b2dfb57a86cc3b5e61b071b",
    "signer": "0xF191dEE0cc4F70a578630b38a44909Ee8b5647e6",
    "userId": "751846296"
  }
}