{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x8734ae0abe17cec8669a9f2def8bdd0fe2870b3bbdb316e583f023f7fb8501c1",
    "signature": "0x730c49aea74075073401836d10c41bcb9683441f1ebd3d40213c3d98f575a739670cc4c19246931d920904b77974b3c4547d090d195d13468f095c80804796f11c",
    "signer": "0xefB2D83c687aE2370797bAD8E40F1631b820438D",
    "userId": "92336974"
  }
}