{
  "manageEntity": {
    "action": "Save",
    "entityId": "1289434199",
    "entityType": "Track",
    "nonce": "1787398850140089833",
    "signature": "0xb4ce6c47deda789b59a0b297cf014dcc0b0249e9d1e46394fcd6e821a3d05eab4e3c1ef3e9874765975d8a6a675539ece09016b79145bc7106e5725628ae24811b",
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}