{
  "manageEntity": {
    "action": "Save",
    "entityId": "717327779",
    "entityType": "Track",
    "nonce": "0xf5d7067bad36889c1f2ac733a235cab3286578294acb14a9652435b68bbe28ab",
    "signature": "0x3b510346e40fae4cb2fa4d594ce54a994a9ee19842320238bd7a4d0538fd771846d8c6543477ed3c64c8dd1ca7afa57167a881886f0de95f6d893fa1f3b38b441c",
    "signer": "0x4D685A9F6DFad053F401a412F6A03094EB9c745f",
    "userId": "6256"
  }
}