{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5c3d552a69b685920bfca85411fb318dfa7d57b4e49544141df3ea6dccf8be06",
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    "signer": "0x114A127424bA5AED7350674f4035E1990Ff46EF1",
    "userId": "62391916"
  }
}