{
  "manageEntity": {
    "action": "Update",
    "entityId": "893322803",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbac89e507e20c010e83260c996859b1827a69de66322124ef0180fec14883950",
    "signature": "0x427722c1528e7a4b7ad075acefbb12381f5ea4b848013f5edf31097bddfeb5780c9de1715f80b8ac0ccda3827c62865747358bb1126d331d1e0f0ce7366298e31b",
    "signer": "0x9A1BEdAbdFEB0a21c6560D4A9ba5fF03431c7f76",
    "userId": "893322803"
  }
}