{
  "manageEntity": {
    "action": "Save",
    "entityId": "1479239307",
    "entityType": "Track",
    "nonce": "0x0e9168f43b1d76934588531a77a02d155218568ed73d7a60bb60b77ebdfa9322",
    "signature": "0x34f3cffe60d8ff7c6711fcc722f7b025c5df3a1a040611a7a2287820bd01303d6e8b1c38369c732fcbcceb1f4eea771fdc4cf356a177d5ef2b33837cf96e36ff1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}