{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0x05e04fbcf3ba08c4d657dd7f06884fba26f34ec999434d812d1a7d29311cd192",
    "signature": "0x3c73163bd68e11dde3eabdac08bb062040229fa7e42ddb0de49282d202851b5f1b6a95c56d7efbad519f947b71ecb2bc9f013cb2ec2c23157fe2bd42dfba00291b",
    "signer": "0x42cB1e20D724BD902Af64cd85c700BE6118500bD",
    "userId": "47154652"
  }
}