{
  "manageEntity": {
    "action": "Save",
    "entityId": "2043442584",
    "entityType": "Track",
    "nonce": "0xfdec16e5528af5262d989f020ca080be013016706e3d8810039a76598fc772bc",
    "signature": "0x50e3f29fa8f262c780ab312f30d1ae3343255ddf0fb26337e1ca4aa366001e7a213f07931f2f91a76f0287a0cb21f8375f4b540e1c5d60c50a55c6ac617589171b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}