{
  "manageEntity": {
    "action": "Save",
    "entityId": "586041",
    "entityType": "Track",
    "nonce": "0x2fc606fd15d6b3dea425d52388ffccdf40e87195222ec8ec815fc51eb0b55048",
    "signature": "0xc0564ba2f89e7983ce13166222f83f4cf9b127a47359cde99d83e8c6277491d72d272c3af08146813bb5d10aecc93e550dc7e1a175eb8fecbf2aa829cc8ad8561c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}