{
  "manageEntity": {
    "action": "Save",
    "entityId": "1479413179",
    "entityType": "Track",
    "nonce": "0xf517a26907cc7ac3a2be5980cf197b1de09c19442263504b0b88d946401249a0",
    "signature": "0xf96a62edb4c4166660e8f2f06ca0f8a3a7fae411b495f31c521b29d58428d02041cae8c35cbccb8d2e8e9166cf79a54630a41347cd4d4e620bd5635b44f27db91b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}