{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x7270e04bad3c45fd47e21161b66d3d5f1fe872cc64df929e9f1596bc50562be1",
    "signature": "0xe9b5d78714b1e3d43fce782d8be2ba4130db74b5f7b7b576f1a42e378c0355af575c3a9fa01daa737322512a6026e9a46263fc7db10665f73734fa4159b81c831c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}