{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304048",
    "entityType": "User",
    "nonce": "0x1435f9eb4d964239a917078f22615d2ac46e9e31ae62c39ddb2c2e3a4a138499",
    "signature": "0x34fec2e7979c9d1c97a42ccfa2898482b26de7d7b64873430568312d14a7d5063ad7d3bf5076d774d0d84e3f997ecfb1a2fd47b4c3d642be065bde6b4d096eb91c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}