{
  "manageEntity": {
    "action": "Save",
    "entityId": "895771712",
    "entityType": "Track",
    "nonce": "0x3aee9f308018a44e211f666a3b90384311f875da9ace9a676b1cdfab06381cf7",
    "signature": "0x2e577ab4dd13983d571eac2ae5c7cdb0297f9f02d1603f848b24363a5713208575f61b65936e733e1a530922bfcb9d0d1ff3b2d233b6e97dd6d18dc2187285a61c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}