{
  "manageEntity": {
    "action": "Save",
    "entityId": "1124472706",
    "entityType": "Track",
    "nonce": "0xbb7e3802544b60e13498d9710982a56bb7f08e7c1fcb55c85d2731ae331a2258",
    "signature": "0xdf64c01b4bb802e3912bf94539378c7a5662729594f7a550b2f6a9347b10a3d7219e2fc3848d4628e6dba753f65fe969258bcd0cbd6ad73a4c0c3ddc0c05bbf41b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}