{
  "manageEntity": {
    "action": "Update",
    "entityId": "312392945",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x319c9a0fe66b96d2926c7013b4981f6a07f88a6f24554d7a4388d4f812e97a2e",
    "signature": "0x9757105009c52ee8e1f2b52b3834a9d19b62f77c971f8d07d5e50bdeda4bb64a7b842887a89e646ac6ce2e9aedbabbf45d4c0127e069352513b5b264b2313b701b",
    "signer": "0x9D0493548DA5A09464F488E2421c2d531019A38f",
    "userId": "312392945"
  }
}