{
  "manageEntity": {
    "action": "Save",
    "entityId": "2093718110",
    "entityType": "Track",
    "nonce": "0x727ad46afa71db124d43a869c87b8dce55d4d5034255c831bd024ceff99bec7a",
    "signature": "0x3daf7a12232af4e362a4140e054a32e71c168f40bffbdaa33d28bffc4f0435b23b837e6b4b5f5a145779f56b3472127df4f9b9196f57aad91cc55e46fc28bab11c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}