{
  "manageEntity": {
    "action": "Save",
    "entityId": "1398007808",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x889c69714cae6e6ba31ac060ebc7d7a3f95caab5ddcb59992aa638c674a25e28",
    "signature": "0x0bcc9d1e2e49dd98157a3721a7371ed7df2daa1bf9a4b899303afb4ef7401d2d6e6400e75b1d9b87e11ef9150b7136774df2a73478f7d18d0474983cae2beadf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}