{
  "manageEntity": {
    "action": "Save",
    "entityId": "85817",
    "entityType": "Track",
    "nonce": "0xbae85484c780c4da2c2dd7d26ebf750e92097e2e6f0333a3aa75da82f3c36bed",
    "signature": "0xc5d2e09a3cb67faf2927d3e5041285175b36f2ee5bc9ce06efddaba32b89acea3d79f4b17e39f9cf390a199c28ccfbd9846f8b0b0d2ea9f4d98725b5f6a317b01b",
    "signer": "0x4D11c3319e766BE8ad4bD57B7E1C96300e25bcd3",
    "userId": "261446337"
  }
}