{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4cfa004c150a855a181b402516d3ad1b630b1497d8f5cd135282c65bc18c65fa",
    "signature": "0x284c1268bc3c95ea55e8157456390894b291a6539277343701e360855ab04b913f15336a8ea6c3a2e7627b98635db75e581e0c5057d11a1baef50f89b3964c491b",
    "signer": "0x0f0E9a5D73d16eAb27e96E6180f9C85A3bF5Ccaa",
    "userId": "349615045"
  }
}