{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0x5247bc1c4051b2b1f4a8424528d7773fce7a3edd73a42a44137181524a7d89e9",
    "signature": "0xbc95cd13a251974405abea8de67181ecfe5009fa2f9c2f79acce49793d149b5329812f25578322534f546e5e66c2a670103a3587cdddc4aebf56f20adb4c9dba1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}