{
  "manageEntity": {
    "action": "Save",
    "entityId": "1022965932",
    "entityType": "Track",
    "nonce": "0x5970283c961fde18d59bd53e3f97494a230e871fd122337986272e8827b094d4",
    "signature": "0x1807e4f091e25b31e36d7b321d8921e24dcd89f5614abeaac9263f566ff7dee51f48f7e51a3caf34774b7ffe25d0a27fe5b986677c8a443f869cad7b6b78429a1b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}