{
  "manageEntity": {
    "action": "Save",
    "entityId": "108672",
    "entityType": "Track",
    "nonce": "0x17b70cac9ddec3ce620828c5292b499194d1c3f5b0c37f2829e60ec72159bfee",
    "signature": "0xe0a0e6ae94749f1505b061e33212ae8aa64562cd4f8891288fe4c1781f892fef77f7335c8f3ec23fd260cea583869dc3505e40cf07761b9b2509a1c7dee6a60d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}