{
  "manageEntity": {
    "action": "Save",
    "entityId": "63193",
    "entityType": "Track",
    "nonce": "0xcae814746dd491d15d0570a375a91cad053151e84c4e0cc3747190099fb71a87",
    "signature": "0x9f511fb0da8f3972e1260676edb8993d6879fddfee7b21127999f887461c3fc639509337d97adc244c1a938d2579a1a74ae7e138f029491fccc2bdab5b9842471b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}