{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x802d86fd6f961127f013b248e8bf27492cc2a1172bdcd6afb069ba6ba8a32149",
    "signature": "0xe13721994d3221c7048af553efc213bed2494eea3390f5328d86684c998bfe876f62f115b24ce72e24a79ba88f687a52c0a5635c6cf2912f4ffcc983a1ba7fff1c",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}