{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0x715b43beaaa8302a2234862106e5346d75989a06327cceaedd1caa02225fe7cb",
    "signature": "0xa1e51cc8a33696c731b85064883aae39a07d6820e2dfb59b711f1c6de0522eb35ed937c1730decd638330828159b787ad6f37c46971ee70a2161cf70874da2961c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}