{
  "manageEntity": {
    "action": "Update",
    "entityId": "349850192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xae88f6bc06632ebf34a443fb2eb657da71fec349961b40a092080860170b997e",
    "signature": "0x43137dac218a19ac92949b57b3f6161721e6aa2225f49ea4baf96b97ae8ecbcf22494e20a9fc7179bc979b1c454e5ff620a46658c9122f2383cddb08a4a1fb671c",
    "signer": "0xE10fc55c02FAEC6dF5dd7834e2C0b691a8Cf0802",
    "userId": "349850192"
  }
}