{
  "manageEntity": {
    "action": "Save",
    "entityId": "978161326",
    "entityType": "Track",
    "nonce": "0xf620ac9a2580b59d079ba0362204204e66886888bd090a5ab0bfe6a06bb56774",
    "signature": "0xd2a7dda6ff6d3b4920b02844ed028abefd72e9debdca9dd13bd75d55b0534d4a70d3d1d9802923dd37445651b75f970c10b8774cbf5693bb64880090a41aab2b1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}