{
  "manageEntity": {
    "action": "Save",
    "entityId": "122966534",
    "entityType": "Track",
    "nonce": "0x932dde9574ea337953385e46921f72be0232463d2d465e04d897d18f373a41f7",
    "signature": "0x6572a60190c74c4a2689a3b474b225c5b24620337eaa44b4b97a7389f59701bd05e55cb37cc8c9ef512682b14393aa3196b19d4412664518132c73f7f1171fc31b",
    "signer": "0xBA73901859Bc36137Edfa36E3ee0de9A95c8f615",
    "userId": "1364134"
  }
}