{
  "manageEntity": {
    "action": "Save",
    "entityId": "83018",
    "entityType": "Track",
    "nonce": "0xa7e5fc6c61e93e586a37c06ef70822937515bc97758a344da2d1113b66b35522",
    "signature": "0x41853c3354a67215552e56907508934769d256720d2883ad6e9e565ffab2d8f42f42c9b02c7c144110c321f015a3a0c4ba09ba51440f1d94c12a036fd59f12df1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}