{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791378057",
    "entityType": "Track",
    "nonce": "0x9b834c940b310aef61498110052e2742061eb468e62dd0a209651edba2bf7ccd",
    "signature": "0xd78d467c90ebe079bc7c0f278baf2efaea21db92d2dd3b3f9ab7a79fbad52a216295a9313e53c5cf2798c9d24429a96c9bb82bac740d71249694c28c86333e3b1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}