{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8e0a3f717893db66fbe5c80e9fcc145ca4f9e7b131cdad74dbc80365aa160af3",
    "signature": "0x80d20d06b8c7c8c9438df04d716f054c14baef56972495c134611328ca13e6dc557f8735c50cac5c7ee308f82068785ae6db544d550d0d6aa30ed63aa72aa6cd1b",
    "signer": "0x039D6A5da9c5D47955AFCccFC47703C228327DB7",
    "userId": "172666475"
  }
}