{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d04cc801723f6dcd3d2aa3a2dbb6392043f28a15fe8338e64486432a05042c3",
    "signature": "0x63f7c455ef252075dfc5574f776af1e2c859045d382c5f15510ee7ef42f7c8ce0344926e9410e84e0fdb8fe4e2f57ae178c3100e4af8682ef6ea7f762b84c5de1b",
    "signer": "0xb1f4515fd4eB62a3D12139eE45A31240E087d8ee",
    "userId": "745626046"
  }
}