{
  "manageEntity": {
    "action": "Save",
    "entityId": "851094949",
    "entityType": "Track",
    "nonce": "0xa3ecfc8da9d7e6850a6c1240f325e82903196e1b179b3e3fe6a861696514f8f1",
    "signature": "0x9c079c0d7a7ed37c4afa6bf044564ba137de8a801a07a5c602a0312458042b1028c9a1eeb2400635b1164830244763c1b6fbd368aeba469a3b6a2f7ae6d73aee1b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}