{
  "manageEntity": {
    "action": "Save",
    "entityId": "144275836",
    "entityType": "Track",
    "nonce": "0xf6240720e7571a63e22f412d3bab074cb3c6a526e8e3c967a5a561c911e45205",
    "signature": "0xbb230a31d00be841ccf864e72e3d2eabec2c17e910dd41209882067bcc86a2f34e9482c2d0a158f92d2e6056214e90528bc2b7396126a674896933d85e027b0f1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}