{
  "manageEntity": {
    "action": "Save",
    "entityId": "326737883",
    "entityType": "Track",
    "nonce": "0xad7661bb7038a2e09ba6220173e4e2f1ea3a8c1f582b9484855598c9c51672b3",
    "signature": "0x5db9c6bb1d44fa39372d6cc64fd3a9c3fa4de338b7d7bfdad2e0afd66dc26e6c7a0b0ace640ae730144a1b1bc1b436bd3c3e839df90ddc4737cc4dc4199ff1321c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}