{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x47abc435004d3c51404cc5b10b88360659d461c274252874c8e38e05069d218c",
    "signature": "0x4f8f372f19375bba635855df165cbcf58f2067b334ea7d0eb49920547136ac50518e637404dbd79021a0b3b84a5436cc7fb6b1e3b7991dde65f4663f82bb81c31c",
    "signer": "0x580E4Fca546A25423Ed8677f42d794506710a60b",
    "userId": "562782677"
  }
}