{
  "manageEntity": {
    "action": "Save",
    "entityId": "141356",
    "entityType": "Track",
    "nonce": "0x9b21944c1abfbddcde84191660b8eef2b98cfb6c08ce36cef33e7c953010924c",
    "signature": "0xacccc90fd675e145f5fea024dcee193e99f596538d4c1f274e90322c19ff0e9a1c38e12ba0b08a54b7a2487546f1bced832050a2de3ad65e162765c326ed84901b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}