{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x46b9d9e360c5971f74b2f57a60132fa2ca698c72b9d1b4c93906d0f397304170",
    "signature": "0x7d5b88d0a2a64da3b03680a5000e585eca14d523c10a0c9e6446b5012a399cd65c3d5e45abca09cce226184c58f6a1f53fc1a1c0dcb6f93b35133ab6497196b11c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}