{
  "manageEntity": {
    "action": "Save",
    "entityId": "761480712",
    "entityType": "Track",
    "nonce": "0x5cb55533c6e49a97d96831f2cecaa90ddc039e60db556aabb8e50fa25d09681a",
    "signature": "0x1da834bd3106d051fb672e918ccbe4218a399581476cb5d34d9e742282b55975047b233d33a8151c19a33e99a5735a7ec18ed293286efe7318d6cc5e1a3a45b91c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}