{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfea135476ae7a7a31f71f1c1a78c3a0b63040c9f81ba0fea78e90f8a106aa035",
    "signature": "0xfd95a94ce8c0696e423d9bd8b3667e861e513b4bc8c5b5412c095ce6acb33d7a4d40d44ceb97649c42bd395aaa9e3319a0c8ad88f1c6afe017ede31db576248f1c",
    "signer": "0xB223E8a02e26f9DFA6CB08e6e8847e65B1DF8254",
    "userId": "219485993"
  }
}