{
  "manageEntity": {
    "action": "Update",
    "entityId": "339021739",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xead84015628a78e76ee0624ec9c26c414f88e23afbd9cbdac05e55ee00d4e31c",
    "signature": "0x25c710ae4db1d9e177cc7130581d31983d92dd142579866d9e804da8b1bd1106035ce05060fabca26ec45d3ad53ae63378a3096792e232974b7f03ac0f7d4f271c",
    "signer": "0x6C3004be0a15E38c4C10861a373c4dF67C0bBc2f",
    "userId": "339021739"
  }
}