{
  "manageEntity": {
    "action": "Save",
    "entityId": "1754827561",
    "entityType": "Track",
    "nonce": "0x8b96c7da428843e50778aa133091a38780c1061d34fe50a3c3cb53bf4007a8b2",
    "signature": "0x3db03e27b79d4771d0c1b0df8ab3916ead193e6a282006b6e72d2bfd3ec1de513d19914e5fa404a6799b63b631b8d4f2ff884688e8cbca33ba1fab11ec51efc21b",
    "signer": "0x0685dE64d6C1DD2F4492DE8d4D836Bde25c77910",
    "userId": "392433914"
  }
}