{
  "manageEntity": {
    "action": "Save",
    "entityId": "211459",
    "entityType": "Track",
    "nonce": "0xb2daf2901b9e7ee0786341a05575ff003bd8cae8f3dedfcf54dee13dc4553f10",
    "signature": "0x81ffcba41b627636abdf8d68aeea02e30aa9a00dabe3b515b2f5c7dc5b3f3ddc565394ddb0dfa329112f19ae4e29617227eeccaa971b63bae053290e92f3598b1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}