{
  "manageEntity": {
    "action": "Update",
    "entityId": "649332729",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16eb8cff7aaf2add6eb61ad0aab3088c8faed01804e0f124fa25a74e85e9301c",
    "signature": "0x460d655e827c268542a06c143d58bdcd5f482a64352cde69eaca895511eb8c9805704920b810808fb54f911036f1602b71c0f588f23ddfa0391a0b923bda28ea1b",
    "signer": "0xE4B27265C4e731793CE9C2F19de593ebF7B65457",
    "userId": "649332729"
  }
}