{
  "manageEntity": {
    "action": "Save",
    "entityId": "1234181261",
    "entityType": "Track",
    "nonce": "0x669d09f6d26517978514e50a01a0f075aff3ab915c2e4d4dcb37a229a84fbbc2",
    "signature": "0xa68239fb8dbb7cc31f117f05e19094629f247fe82623782bae1e4f56446228bd11b950233591fe81aab2f5d1c1d83e93060a9d019bc158174473047df1fcdbca1b",
    "signer": "0x019c1Ea6f901A4f7AeAa1daD2842a34Fdf9A9FB2",
    "userId": "798348033"
  }
}