{
  "manageEntity": {
    "action": "Update",
    "entityId": "522747799",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdd53d1f548531c972da6098736fbdeb6424901141468853557e7aec6b875c672",
    "signature": "0xdb49a9ccb12348d8b77b7e73f9581ebf0ef85489847f970b93932746900d91d04009947b83af477d31aa854d04b845fb771f89c9ec8e673c0d0497c47758a0711c",
    "signer": "0xD1DBA334fd16083Ad4b48161Ac5978e18463Eb8F",
    "userId": "522747799"
  }
}