{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0x589c76f65b5964824f8e7348ba5b242e28c51414d9947903c9024fb35f10e284",
    "signature": "0x171403e0083e1c302988357df906003fdadbc29cc28e036eb7b75e69da7577047b8ceb47996b41fde05d39232efa6ea7f90aca05bcdc6a62446c8022207e5e6c1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}