{
  "manageEntity": {
    "action": "Update",
    "entityId": "891501053",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravngcxzijfw3fqawjy3qr52cwu2ynjpegifk5ivh6mzl5nxmi3nqa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1378955558}]}}}",
    "nonce": "0xe600b91e81b222ecf5b14d0f187053f3590feb4795aa1425a0a9134680335fbe",
    "signature": "0x342ca3d9ed755b11ba75b4024324c43ea9ccac98ab6ff300ba36646c29b2f07e404bdc319e2d18685403751a4019276f9e6308f8c3f0b716d7b5b665e1d8f5451b",
    "signer": "0x57cAEe5eA82f42935417a3Ee55D1a1c8E8205709",
    "userId": "891501053"
  }
}