{
  "manageEntity": {
    "action": "Save",
    "entityId": "1028422226",
    "entityType": "Track",
    "nonce": "0xb6f3f2c3a2f66754eb61c37656bfb8d733c0bd7032371ecf73995e4b13a51102",
    "signature": "0x6198ffcea9a8aa2b2c37c9af73967da8feb629959509798293bfc6cdefc81c7627eab3a216b7c5224e66c805a226a34597b7430e31aa357e2a3640e4cff1ed741c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}