{
  "manageEntity": {
    "action": "Update",
    "entityId": "971129804",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafds73eyqdlgvyrujtdbd5gu2hd2rl6biziks5tdtzalp2taqnxgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":940553898},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1972733550},{\"type\":\"playlist\",\"playlist_id\":787876336},{\"type\":\"playlist\",\"playlist_id\":107356}]}}}",
    "nonce": "0x278781b0adc828536ed359fb687dfc042e6e7b9fb34a96d9ded8d2271d353236",
    "signature": "0xd2511d0165e45bf6b709bf975d2954b655f5b71be00e0aca60dcc2f6ea555fd04f299ee1eade70e0bd29b2a501cdebdee788c282f6189ccfcb09cf1726b3ed0b1b",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}