{
  "manageEntity": {
    "action": "Save",
    "entityId": "327742",
    "entityType": "Track",
    "nonce": "0xea798b3959cee4fd25e9a691108e47a7b19e07321b59c926ee40f9530ddd45a3",
    "signature": "0x2a6a942413c6bf50a3077d58f534c2dd80a25d215e746ede4d2f43226019b3796ed3ea62ae25091581da1c832a406987cc841694a656257fa869f11bbb34f4601c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}