{
  "manageEntity": {
    "action": "Save",
    "entityId": "692303128",
    "entityType": "Track",
    "nonce": "0xcaabefa45298ddc05e7551d2072635bc3bacbf1867d4eba8be32b9f017b3f3b0",
    "signature": "0x0a6d99482649d186a2bacb7a4bed9529e14519a0681b47f186aebf70f0da5ff036a09c1757857e0378a53dfd68064125514895557dee5eef953cba71d6fb07751b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}