{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319061684",
    "entityType": "User",
    "nonce": "0x43a4dfa6345fae2a485f72e8faed955e8d37376ab7ba4f7cfc8a921f1b74cab1",
    "signature": "0x3b022b412eea0105f29bca16db48a0790a3158f2f3dd0a7b346907724cbf6ed032735769c1d495ba4fc21abbb986a3365e63ba26e2807d7e13fcbcdf821e9d8e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}