{
  "manageEntity": {
    "action": "Save",
    "entityId": "1225507808",
    "entityType": "Track",
    "nonce": "0xf69422b1f3895b050ce6abb5dd4ab5f5aade8a24f3bd58add72eaf3c921ddf48",
    "signature": "0xc9ea3e229b3bc916787f036f74f495d61ba27b7d880ca88ce5cb9b8c677ae0fd4b00422fcf9c22e7fbaf9b5cc65ea2eded520800f303775dda1f3f25a9a6d6eb1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}