{
  "manageEntity": {
    "action": "Save",
    "entityId": "2075237461",
    "entityType": "Track",
    "nonce": "0x03bfb1a8525dd6158ed41a40ec3e43e631564fde231cbcc6ded9b77e63c65e99",
    "signature": "0xb8f7437fcddf469de9f53dfb9712cdac4f73d7085cd69bf5aa6193f193f9b16431c16c15a754d297dbe571e55b072ceb6eaae0a75602898566859ad427aee1d51b",
    "signer": "0xf468323dc163F639F1b7B3AE6A5378193b7405A4",
    "userId": "741856048"
  }
}