{
  "manageEntity": {
    "action": "Save",
    "entityId": "117815936",
    "entityType": "Track",
    "nonce": "0xb0a9b02c86715ffcf75a9031a2a83ed38479672c54e6b8d4e76de09e6341f157",
    "signature": "0x6808df54809b432f660843f0dee97b76f477cc3be438f723079a5dc3db2c22c00dac8373976e3d61fa7f1adc0b820e3631e2a056deae2ffe799e3bfd13c9c9401c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}