{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb36ae3961d87b4ca0870e4e234a7bec79e9c7b5e2935611446f76ae7ae317f81",
    "signature": "0x73d1cba760d95d7e336ee482323a4aa9263e9d6775da227f1749656717bcbed546ba5f10ebaad4070bd2c4319f9529de12df68e70d125096e99548a43d85138a1b",
    "signer": "0x93ea27DfebBAd2b9573740Ccb13162c0f7ebd6F2",
    "userId": "869625292"
  }
}