{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0x7d240e5e85004de0d54e8dfcde4c1ac854670cf076cb2e387141099483ccb114",
    "signature": "0xc57c31d74a3ab468bb5b2d097eb0eea71aee0045a4627474b81aaf628904c69e48e05eff82d6afb9061ae099f69ad4c61aaf8f176dd14395a0ba1813ac4d75d81c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}