{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5560",
    "entityType": "User",
    "nonce": "0xdf11a425ed391cf9efa29eaa9b981b1c439e730d5b5b515fd9374a1c30f14a16",
    "signature": "0xcc7bfce51e3497e36881dc25c099bccc43e525802621c15a9672b0488e4870583fa80f414481ee6ffb8e0593f7737730516bcdd2398082afb59c0c7c3bfee1521b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}