{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "291417100",
    "entityType": "User",
    "nonce": "0x9560cc85b211b37c72cdd7be23b7e5bdd13852e1ee5bdf1fd52d235598c4853c",
    "signature": "0x3c023b280bffaae461654f2ee7fe9a3c75a85a634c460c03b001276ba5bd0f92637a6535a7e02e1abd9af8b2d24704385271631675352cc3706f00065f5392e91b",
    "signer": "0x69DAeaBa091F0b0C82B0f54E9a01853b9fB11369",
    "userId": "306102391"
  }
}