{
  "manageEntity": {
    "action": "Save",
    "entityId": "119729",
    "entityType": "Track",
    "nonce": "0x82bd49b06e9c5094d9e04fc2e4a43dfdec3146fe776d81c7bea9e51b29c5fc33",
    "signature": "0xb41a881493b24cf1349fe4883d81bd21769e8227b5de55a0ebb0039ade02fd376f27e602b8cf1921a64755d853802672f9fbe8cdd74fc3b048d0e57b56c6dcb41b",
    "signer": "0x28945B345Dc8334c21B4e932dA506ca6Fac7e18a",
    "userId": "290283513"
  }
}