{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116784",
    "entityType": "Track",
    "nonce": "0x7270f5996cf1a6a65a35f16e1fba889dc08d7d167936a4fffc052b5b27c853d7",
    "signature": "0xe6becb7c58e26a9570158a203522ae63755d51a6c8ede227cb32890f22bdde3d0813c30dabb2a1e8a946363c6d47fdbfd72df26161bbf339e2df53891dd9984a1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}