{
  "manageEntity": {
    "action": "Update",
    "entityId": "891501053",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajfy3f2hfyug5cwlxgk6qihgqo24khhlyvugzgxbnzvole2ikqnoa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1378955558},{\"type\":\"playlist\",\"playlist_id\":107477260},{\"type\":\"playlist\",\"playlist_id\":2127684808}]}}}",
    "nonce": "0xd6e507e3444ceb3cf81d31525c0a91855c350646c675b672db4b78f4746a8e8b",
    "signature": "0x8d3884d6125eb977f46ade5777b4ca65194d5d67d23fedeced11aba70187ffdc7ab3411b64cd0e1e3a4302a0ba1d7746383c3d072470c5a7cb413a96c38b3b661b",
    "signer": "0x57cAEe5eA82f42935417a3Ee55D1a1c8E8205709",
    "userId": "891501053"
  }
}