{
  "manageEntity": {
    "action": "Save",
    "entityId": "1866010780",
    "entityType": "Track",
    "nonce": "0x04a0ceeb41525c89c77d5987b53a71d94978a4b82e70f23dde3aafb1d198707f",
    "signature": "0x1abc71f00982688637ca1f2a6b44a1a62e7e45aeaded966ea48e2a65d42c12fb5556df5b02e8bfd463ce3e50ec566773f8c2b6825d41ab9fbc4eb1f58f5686911b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}