{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543553639",
    "entityType": "User",
    "nonce": "0xbf3263199d5e916fae82625cf78635c52856083b9add5ca788844041065f8c5e",
    "signature": "0xeadd1d7b56bb1071d250d5db748f2372a443cd52e2dcda084f2a4ad576e4018467c08fd85168d246379974939cd700017b017524c637a636214f75f3cca162281c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}