{
  "manageEntity": {
    "action": "Save",
    "entityId": "2114341531",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x85a9a9658ad588bbc9eaa1c7b48be8da714ed7e2e074232547256b4884f30d8e",
    "signature": "0xd96758e044d6bd3ffc6017f5953f13c44a5540d5987a9f4382d5b126fb8a15bf3a68fcf18fdfb0ca656c8533530e2d57f101ee934bc28262ca46a4692d07a69c1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}