{
  "manageEntity": {
    "action": "Save",
    "entityId": "1800075745",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x26894f7b14975dc3a0049b62cd88d6c9e83b748ecbbd3cb76127d2f4e32f2c49",
    "signature": "0x486b455d0ac63d9c41b12a49a0b2c3369ffa0cb822e2f81909d06091655510686aea1d53ec1dd3bad5985d45b738ae924ad7cffb3081272014c4b8dbf458a7fb1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}