{
  "manageEntity": {
    "action": "Save",
    "entityId": "1676721472",
    "entityType": "Track",
    "nonce": "0x695807dc356bd80959b3c3c6c52b9aba997a95e761f59693bc83e4861cbb09fd",
    "signature": "0x57ce6f4c1ffe8b7d38c189c4a00b27a663cf9e57fdc74ee70be2173f800bfb3c68972f92a15f8511fe16787f818ba1c643fad81977c76991f929e7d942f5a65b1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}