{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881138",
    "entityType": "User",
    "nonce": "0x9f5e071696124b86bc572314ca3069d1fe2071cb14e65f7eed552997906c1eda",
    "signature": "0x2a796ef09a8be84052c3207a55de6c98730d60f27363958bef78549db1629a2d46febb54ffd256be87e93c0ef388da6892cae0eb68cf7325497ae3a55b460c451b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}