{
  "manageEntity": {
    "action": "Save",
    "entityId": "1112958",
    "entityType": "Track",
    "nonce": "0x295cde35f3cb261cb18060608e51524a423ce302082c7865946bd69cd917d0b6",
    "signature": "0xa4d66ce45a5c65a9f543e44ed68f2d5cbd1c120f0914d7d5f32d99b15fd0ca3267dab85a290e28775fc07b6438566a06bd85580bee210955c964ea0002c444dd1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}