{
  "manageEntity": {
    "action": "Save",
    "entityId": "1031025280",
    "entityType": "Track",
    "nonce": "0x318ec0742951f5894664fcb3fbc113bda926bcff131159cf7814894f361f79cc",
    "signature": "0x6a64ccde53e06ee3480e9f00ef07f00566a1a3e47c8c4c97d61d2a37cb1a2e6869a0ff2a63ac551df14fa8d33cc4be5d1df64ae6e367667d5470b4eeea6359f51c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}