{
  "manageEntity": {
    "action": "Save",
    "entityId": "1197643869",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfc2be396c6a525cce05715d61bccc0d3dc25db4538a7066d5a8074ec9c9b61d5",
    "signature": "0x99fd86eb88418b853a3b0eeff273631b16b88678cb27c7001b44eb736e7d7b654dfbfcca5497b3ec8c27cab95aa4c19ae3c1fcbe3fff7bf70f273afc95cf7deb1b",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}