{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3741",
    "entityType": "User",
    "nonce": "0xb1cc4d98e515db418dbb07bb9b1cd6d5a827a364e0c675e865ba453013ad349c",
    "signature": "0xa0ea8f92e46838c63b40741881a3c8cc7a84e0ec028852cc65e902bcf76d6e3b1ba7d603866a26c50a06d36edb6fc0efeec4c1b7677f5c1c3458a2819a1b31951b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}