{
  "manageEntity": {
    "action": "Save",
    "entityId": "1395564220",
    "entityType": "Track",
    "nonce": "0x32980ad1aeca329ad2f5b1313e9577ae5f4abd3d5380a661a74b16b961edb33f",
    "signature": "0xa9b4b121ca2140617b122f40a278e8949453e082878c896009bc50fb4f6f4d6c2b336fdb12136a65ed509ee0a7e16132008eff2cb0ae854de2edb31ddb0ab3a51c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}