{
  "manageEntity": {
    "action": "Save",
    "entityId": "406432",
    "entityType": "Track",
    "nonce": "0xad3833336c40752eb83f691a39df52afae2164e83061d17a8bdda59f7d8f3ae6",
    "signature": "0xb05638e42c6d16db836dc057652a791e1f3bb3832d16a79541629feffe8f138e50b1b70a8127f2eaaf698979dc4d6f044ee5398d81b245aede8960af087c7a801b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}