{
  "manageEntity": {
    "action": "Update",
    "entityId": "534038283",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarfuq7bpl3s25jv5spsdlhwnb65rawrqedgw7imqzjrxyhreby5ca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1206137286},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x893a0a88550ca8e57d27f3a4bfb98d6c3e7c62cb11a65f2fdd6e67aa75ce16d5",
    "signature": "0xb44b7f881519e0ed1a38edb062b0ae21de745e7fc6d1b0eab4f42fd3597c30b5366beb8057312914c3ca5f61c2b61b96c8ac9546d687123abb7c441df72027e51c",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}