{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "472372421",
    "entityType": "User",
    "nonce": "0x8ea0432356479f146b6c6abc45f5ed6aa133dbb98369b5709f26dce1f942469a",
    "signature": "0xa4a3e18dba9ac6948febb7bab446aa63da2699ef95b650c04ae0f2b88fb87f0f6cd4f919bea896d68c049f0b549f4006d4ea0f6d72955c04e4c067205dd3488d1c",
    "signer": "0x7315e02d352D97bee742C3B3D87F3277D05bA410",
    "userId": "909822926"
  }
}