{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981557886",
    "entityType": "Track",
    "nonce": "0xecd8ebb0d1d0959c347d2a60682f1f04b099c1ae30f00d3f9590f58f57ce048a",
    "signature": "0x52c0c647cfbb9d74de89e8f7d4b0a40071c379ae1e010f7d3951374ac9fd01e568db45dcd469c305d30dfcaf733a5b58c0adcf318e25e7a69b837b1a7887d3fe1c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}