{
  "manageEntity": {
    "action": "Save",
    "entityId": "636326995",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3891cd0dbde3af171a7d9e11fd6365d61c7535c51d4d6e5961da0e02889badbb",
    "signature": "0xf63ee984cb9c420511e593af21c269250237fb1a114fa4db2d3b109ed3dd1e07426e0fae4c0483f21f8357c19af29937103c7fb6da0e2dbc71f73cd0a83553a01c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}