{
  "manageEntity": {
    "action": "Save",
    "entityId": "1171010396",
    "entityType": "Track",
    "nonce": "0xcfe7e104231af1986bc24cc33f74096f15dfdddf9a23d7899b351bd861f2cbef",
    "signature": "0x27da780fe6e6c0ff3d01f921e9866b96b92c78a8dac10ea78ff2b82b382bf7d1775a7e6f76515e4929a61bc5628f4d0664867beb61af7e0b6191a0f262b95bb31b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}