{
  "manageEntity": {
    "action": "Save",
    "entityId": "869176579",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2ca393be8464776fee7c7e69a2d03c88e4679512788ecd767e6ae41332a23e7d",
    "signature": "0xb1c7ff8001bb48166e8e48dcbcd556a17e22ae009e0b0b3027e8388809947aa907d008fd215e2bb1fb8b86eb0dab8860fef0ee406b51082401e4ba80c52d15301b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}