{
  "manageEntity": {
    "action": "Save",
    "entityId": "636326995",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x40645d817f3bc260888dd41b53be540ce331ccc06d710a198185f9594c99d078",
    "signature": "0xed4ef2a05cc469eb36e7d4fb02536f9e0e74f73c2cafd0ef4d5f75a164bd7cb0543a3c6921f0c8908f7493614981bd15f8e682bcfce9fb9896895dd6056309741c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}