{
  "manageEntity": {
    "action": "Update",
    "entityId": "199013801",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraw5xjsgqy5ugtlf52gcl5jeqskyigccxo5hgg6xx3qwtapekixhuq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1367558302}]}}}",
    "nonce": "0xa72c37f162539d207035ec49f62f8742f4ecc0f937e46eae17914e460b86444c",
    "signature": "0x61cdc57a64eddaa1f38fa1d050bab96bab3a5cae2e78ef9a023426c911e47a3a68570e3b8d52b9938df43b47644bf3f8a3099bc2b4c7889e84e87934bbfeb9be1b",
    "signer": "0xbCFB375A5e159E01a5f324E049E6b2BD03A0E548",
    "userId": "199013801"
  }
}