{
  "manageEntity": {
    "action": "Save",
    "entityId": "1962804186",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6f4d5ebcd2635b1c24eb91930022d44c15c0d29aaa833ede126e82768ea18116",
    "signature": "0x5ed8c7bd0574cce36c3492475c23681991e1a1d5f0c722c78b0f6217c3c63ccf1fddc0299dd56ae817aa1bfcf31cd1a355142a01cb41aceae200db11778497eb1c",
    "signer": "0xEeea4f65FD2D7EffBC68176EAbe8544B088Aed57",
    "userId": "584616263"
  }
}