{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761056016",
    "entityType": "Track",
    "nonce": "0x98a5149048cf3d92ded5513d1731ce8c4c2d18a08a5baeb813123a594f52abcf",
    "signature": "0x64d2d77ca4ba5fabea18a9f5cb500d8f3b0dc317200cae2e0674dce9ba6d0be117340d54fddc85d20f82e6434035024b3a39f92c526d3e3daf58cef7c29313eb1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}