{
  "manageEntity": {
    "action": "Save",
    "entityId": "2069349618",
    "entityType": "Track",
    "nonce": "0xde53f823eb32961ab514e5041e7036dc16c82c830d4c877c6d6ad4db65d5f572",
    "signature": "0x0cd62960d954683aff4ab462c78536d8a4101ac66d819a29ff00531490e1c63c35a7e049b316a3f119bcb8c3192c7762fedafde36a7804d76c970f3e687a50cb1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}