{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123061",
    "entityType": "User",
    "nonce": "0xf64c68ce2c7795ad18400b60bad9c7a927cde5ca2b95db6fa0c206368e061de6",
    "signature": "0xa7e21ec3b78e869d6de0a68c857bc8f13cd8251b833cd37365a5d67f2e252c201dc025a3d4a7114f31e6326e45286daa0ac9dad7391e6b4060f05ae76182af821b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}