{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515515570",
    "entityType": "User",
    "nonce": "0x2666d2ff71649c53fb30cdf37400ae7d31a1c1ebe97eec51e5e0c0c407c66375",
    "signature": "0xfdc04e91cb61f6c4f9c938708d16ec9d91cca368bf1081ca9d68cb34234a4dd5289429f610da26348380bb52c211dd9d029e1625801e31956b8ea26eb4a528131c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}