{
  "manageEntity": {
    "action": "Save",
    "entityId": "1175357899",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d162dda11067612895fa189516942d16d8908580610e8bba8555798e7165c8a",
    "signature": "0x80d867869b29177dc453e6e78c891ff902f896416e443b41a5d303e41661cda2304a6acca522a21435d51e19de99b0d11499327f6c4ea15becea2106d43c23c51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}