{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40274",
    "entityType": "User",
    "nonce": "0xd8a172a071c3ddba5e772fa1d2bc508cb6a64757a5b236a5f9f7a8de9c815fa7",
    "signature": "0x52a15a60aabe375b00b5c2640eebaedc9183a421bd7d074b384db6401bfa338f4e1fb2ae16cd0af6e7b9c1799eb2a5f71617a06a97ddfc777bfcc5ddaa34731f1c",
    "signer": "0x75Da3C6dD4bBBbe11CB9AcF70B6cab12e8208989",
    "userId": "432267938"
  }
}