{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086894198",
    "entityType": "Track",
    "nonce": "0x69a385cb95580396d20c3e5e48e11a412252adadf28dcc4160a4de0d2f6274d9",
    "signature": "0x570b64210fa5998b7df13001fedd6f3ac297d265d1e6a94289aa7e7cd3e6e5ac1f62161b83a1165790b77982a75e030fea218cb1df3f25aedec42bea26a51b921c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}