{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x5f00de271570f5f5fbd2864c331023382a985b10cd85b5ac1953dbaeb75a7c80",
    "signature": "0xabaf595a22be3bee8df0f09f1b5b31f7982fd2af4146f8365d3276de1f3aa32f58608153d2bdd368bcec0fef69485d6a9646a53b734ca91407a84b092901e90e1b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}