{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc57a9910337cf55135aca79e8327bc0a446af0ff399a317a125ccbedeb5e1f5f",
    "signature": "0x1497b86e890077aa912ea4108440edf38b23aadf64b411d8437f9c3cc668e0cc747610861065090b7e95c9ccbb5c50da11a611f78f10e3a92c9c9fba3003ec4a1b",
    "signer": "0x031a7407ccAe9d79dbeaEa139109F0224F0bd747",
    "userId": "361844768"
  }
}