{
  "manageEntity": {
    "action": "Save",
    "entityId": "158003592",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa78806f40a51b2dbcb04aaabe2903a75bae2a4d626b9150b2a0d425fd3712362",
    "signature": "0x6f68fb9656efa94c79864c5bca11980e49682783d160f9aa298d2724e152a0dc4ad0006b3984d5056fc72498c48c80a34b2bc13d6ad87c32f4be8448abfa2cee1b",
    "signer": "0x550308aa4AcD9bEEC92e3A1c1a3b59B9E2d7f0F5",
    "userId": "232042"
  }
}