{
  "manageEntity": {
    "action": "Save",
    "entityId": "822979769",
    "entityType": "Track",
    "nonce": "0x20a26e2b5be967988652e5254eb0ab467333d07b0b578b612f27d445670fbf66",
    "signature": "0xfe8384de152e506096a899fc368113a8316c3ea82feac20bad8ec1ae6a5775fb15ba11fe15d1f2c3fa097a8ea7b2fc89fc0330c025fcb39108cd99a21f0509741c",
    "signer": "0x9c3B758948f27dCECee5f39438D5E15d6e82FB67",
    "userId": "283863311"
  }
}