{
  "manageEntity": {
    "action": "Save",
    "entityId": "1363674202",
    "entityType": "Track",
    "nonce": "0x27478956f598d30765ae1d8abba45753c6178b9bb03c5f6bc183256990ad9ea5",
    "signature": "0xad2ba13d3e873739dfe1148cca96656fc2407e5dac8ae6e84c7fd9dbb21ec544325c06a3b7a59bbe83c62953b7b11005b7dda26b21eb2cf47318226096705eb51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}