{
  "manageEntity": {
    "action": "Save",
    "entityId": "392161583",
    "entityType": "Track",
    "nonce": "0x08255ea93a7fc259dfd462ebb279b8216f8f528ac38c07ab21b060ec8c354ab4",
    "signature": "0xb24b68bb98a4b5a565f733789590df4f8c77f59b8ef4a41bddfdf316e4117c3e1cff06a0efa94421848e9c483c78e9ea8a8c047a3c09e5953e534ffb9ebfdae71b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}