{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15797",
    "entityType": "User",
    "nonce": "0x1858fc500108da02df49b597a75f4ffb47a9cceb45adcf8fd851eeff18b3b92e",
    "signature": "0x9fc69eeb1744f7c2732f4aa7c8b875b5d4bb303afab10a647b3076f785c6ec715692d9f7a6acd7e589c1cab0ebbe27511f38a69785dfedfbcf8dac0e81d780381c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}