{
  "manageEntity": {
    "action": "Update",
    "entityId": "843617017",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraj4p5cd25idb56omqd3ykcokkxniekxyqfdllq5cgr5bpttvlbjyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":639543760}]}}}",
    "nonce": "0x14a4c96a7e12f6db7641f884eca6d994089f7b45e1e9ce4af290a25018c50616",
    "signature": "0x193f52cf76fd8ab8034337c9f676ee7143a108ef9befccd1f4a7a03a740b088942322258214d8704f07e1b735ae8dc09d88b7a6372488cc9f32a3f825600088d1b",
    "signer": "0xD3369c611465F11512aF702F20e281a94fd13be8",
    "userId": "843617017"
  }
}