{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x668e37e401851d21714e18578b726baec109b2c4d7ebfbda17274ea8d18e9e27",
    "signature": "0x73949d76fd623d35e5b1fea7372f0ee29fb7849d161aabcd49c98263ffa377f73059b29c389e34514a9002cac4e94c27c003a931a62d663915263dec1d4fef1b1c",
    "signer": "0xaddfe8a42a112B9e07190590DCa78C32CB396871",
    "userId": "380767039"
  }
}