{
  "manageEntity": {
    "action": "Save",
    "entityId": "815125955",
    "entityType": "Track",
    "nonce": "0x09aa38fdaa4f6277a89680ea7896cee9b95de2e078f2e8fe880bcb7271dfe6b0",
    "signature": "0xd82bf7d048c7686c7d0e7faab9c37b499e8ce9f953c69fc709742a1d1d01f03a417923331315d739c20217f85353da1d40c629e82c94bfe4c52062e7a7a5ad601c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}