{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0xcd240d13847475db060588536fe9780668a50fa05eb7814cf72ac91d291e4307",
    "signature": "0x67ee55688c3b45830cc37701b2939fdb64da77b00fa7cceace01cfec3a06b7190b4e36bb31a6d6eb9781543e7026874d7ca19bc200f356c219b76db9170c3b451b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}