{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xbc896e49518b89c58d477e46331715f41961183c8a242087c85bc4bdf452dc9a",
    "signature": "0xd7c9921f81f5d7d5e776312c9d406d015324713df5d52432f00ea66af96fb49354d7551980968ca75166c1ec52752c1961e4a5542af89ed1d489a020c1e172ec1c",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}