{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987199883",
    "entityType": "User",
    "nonce": "0xee9110eb3eb4049bf3a5c48925ddad171d1040959923dae234f278f5a1aa28b8",
    "signature": "0xe2fe51cbe0637290beac767cc06bdd0980dfd203db7a598491653f2ec83038ff41016455b779609588ec0886c253da3e3b2142b39697e7a3e15f4a67df5863a41b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}