{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xb50a94acf6bbb757f2e46bfce9243c9700284da34959e4a558a164def3f5b583",
    "signature": "0x75e94272e5a2dd937fd1ab0251916726eb601ebab785e028338df0d5650c7ff909a402c2d56e58aca1cb0f6f60c2763ffe69c51ca8aff5baecc1a8512e4dc5b51c",
    "signer": "0x7B0C8223b73b88E2ff71FA991cd22e99D81fA154",
    "userId": "394678487"
  }
}