{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203070",
    "entityType": "User",
    "nonce": "0x509e5e015f0696415c66ac19b97084ca087f6155feb7fb3eee18c0d8eb6ab4d1",
    "signature": "0x672082cf94ad629da6d0045de855c8be2a5049e016bb8275fbbe430373a5094e5025d8640e4eddfa86dbf340d84007526a41f2ddb8b92eadaa32bab894b7eeb41c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}