{
  "manageEntity": {
    "action": "Save",
    "entityId": "372127480",
    "entityType": "Track",
    "nonce": "0x60adfb7367a982aa99ab4bd0723edc05a6d5ba87163f5360922b31521addb94d",
    "signature": "0x8693ebd9fbf3de0c746134353f153479aafcfe086abea54b52ceede5d084043c381c6614147eac36328063b02117fc770830d08f6d76dcf3c6d899180401f6321b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}