{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f755dab1d18c1e793281b52f8a67765e89946137115c62940b8e6783f2e9414",
    "signature": "0x0408893d4f15fdae3c37eaaf1a4ba9be197a81ca9f0a659a3d4e879c3491761f1a02bc017e738f674b6f02c6a416d8f691795313ad1364a54fda5fceae9f98b81c",
    "signer": "0x3907a700a91FBcE5b24D6B136658B36C50F3AB87",
    "userId": "316899709"
  }
}