{
  "manageEntity": {
    "action": "Save",
    "entityId": "1882740054",
    "entityType": "Track",
    "nonce": "0x9089c9214d49b962f244ba0669af5851c6f89ff30637b3f02bc7a80bcbf003f6",
    "signature": "0x806c97c7cd24e11377e1c2d3116fedaa6453921ca9359fdefd780e96df7636fc7c63811e960a0f6080c8895824820c799414ea7faa3ee04448d971eceaca0b801b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}