{
  "manageEntity": {
    "action": "Save",
    "entityId": "1373251976",
    "entityType": "Track",
    "nonce": "0x0ebe193a742227af458632177fd4a4f74f266cbb4170a5a47febea829e07cf17",
    "signature": "0x3d4ad6fae4ad3c1dd05f62ffe547675ddd8f07e1b33c70e126cc4a4796a18bf71b121fbe5ef3455839c9da729a71b505db609ca213f62622c458f5db17f2103b1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}