{
  "manageEntity": {
    "action": "Update",
    "entityId": "319892282",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradwxb42gbqriar5se6kr7ee6jkttkfulzmleecfmctw4xcsdejk3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1844453164}]}}}",
    "nonce": "0x96a1c3fa630d34b4faf99d5452ec03cfe6a51c1ecbbf3238d69455d1ffde7177",
    "signature": "0xffc0d405d884840934f8acfa3b771cd134a062b420f654e6adfc60e16c4f6bb819f725f4be8958a1a3b3292198e1d2fe6232bfc9948a72e440733304969225c31b",
    "signer": "0x4219eDC185d97988b2570653ECa05BAeFf091335",
    "userId": "319892282"
  }
}