{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924564487",
    "entityType": "Track",
    "nonce": "0x491c329523e37606f09d128596b09f7ff7a6347b71a3f1b416ca451cb945d771",
    "signature": "0x72c2d3d3a52d906ae4f332aafdce40fd799477f5430f3d5dbb563d1c21dd522825a9c97902d1ccb5d71673101eb242ef3defa34697ec9d45f4c2e68c80b86b661b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}