{
  "manageEntity": {
    "action": "Save",
    "entityId": "831775156",
    "entityType": "Track",
    "nonce": "0x061958faad358571b8ae62cd27bc4ea3d1349df7d3db1ff372dd8bf743b47882",
    "signature": "0xfd11e52a8520b768b955f92aa4c98f1b1dd81df75fb0b9851c7c39154e211db467fa694fe52ed0eb6b7b4ce8f8944d8e6a0a62ab44407f90fbc9172cef7ec0d61c",
    "signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
    "userId": "930634116"
  }
}