{
  "manageEntity": {
    "action": "Save",
    "entityId": "1315639774",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb70c265b6d88f44d8db1d281d5d41014f54bfbdfa18ac9281736d6b1b6fc7ee0",
    "signature": "0xafb6b22b0a49fbf9b8cb9779726a43bb5970aa5ad3ce2d8077d7e09238f9aa3203eb5b31f3d2859716288fd1c6d1c371511d05a9d19cfe7474c71a354307f9721c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}