{
  "manageEntity": {
    "action": "Save",
    "entityId": "1951056059",
    "entityType": "Track",
    "nonce": "0xef36ade4f24ce6cdea512220d0f866fdead81fccb6321d66ee7394f714c826c1",
    "signature": "0x8d80e7b3fb2c27bcaa91b32e42d3d633c1695ccbd9462b3c0abe6f10bed9422f2e8ba0ad3689ac93cd226b12363706429f6a341bdb7527049f7bcf69b11d60e31c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}