{
  "manageEntity": {
    "action": "Save",
    "entityId": "1373885028",
    "entityType": "Track",
    "nonce": "0x3eed36bf38cfeb826f834e4ddd30c06636a2c0ad22a247b2f9223d06b417835b",
    "signature": "0x2c30d6118725e320cb17117d8bf96eeea71ef513a2c4fd2e88e2ebfa20fe891f6159a0f3e323f04ae71d7b34be07702495574a08017adab3f62bb13100db807a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}