{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0x709041906880d78922f6557e596106296276042077e7aca091bc99a3bd341808",
    "signature": "0x8c0388d2ae954eaf28c18fc3902f7dffcb97375b4deaf32199c5490a0ca649616887aab3626e67503a697c4ca09e4f74397bf8c50e91775f15f0ce6ca7a8dae81b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}