{
  "manageEntity": {
    "action": "Save",
    "entityId": "1173996151",
    "entityType": "Track",
    "nonce": "0xa16314ee057f0c79112dd824e260e5e228db1def09504ac8adc688a3579336a8",
    "signature": "0x27b97c0cf807388dbdf6a7f2b61167251fa596f049607c36c12edf66f5e8e2aa6b2b2ff300fdfbd0b68cc8b0667dceea1844a6436fcc62bc28e1d5f0f104b3ba1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}