{
  "manageEntity": {
    "action": "Save",
    "entityId": "1886116650",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x876cd2a0b03fd65e1ca54e3878466b2ef66c8fb7b3c3f40238a3253c90ae40d8",
    "signature": "0x2c8f4a3197cfd0e1e025ad784b54fdcaa702d51c3c74a046b4e12cc6a5dd958900f616742c4c5df3cb6def38506d758d05db8c691762305d8c0bd937eb0717611c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}