{
  "manageEntity": {
    "action": "Save",
    "entityId": "136027461",
    "entityType": "Track",
    "nonce": "0xfdd8e2068db0e8d5bcc8d965c4570698245442b6dd02ee79cacf737e2209e187",
    "signature": "0x700ce890144b9bbf2a4b7ed1293890a9074eb657797cbfb751227ab1d17a1aeb264d7738295f12959cabf6b24e6a3367a0f637c188a9d0c0c04f3df6c837daa71b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}