{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0096c44ac6417caa0b018343335a04d040a1f1547aaf7121497cc7b576e5dda8",
    "signature": "0x631759ea59470e97313e8c8681ee6d81fb2276afd424e854b777b6e651d6f60c2fac12a2690a2b3b6441734d5b963afb3919a8d5d0a784454df51c47414c6ec31c",
    "signer": "0xD998291c151d687cE945559f5AD3fe91d77f23Fd",
    "userId": "247903729"
  }
}