{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe166912a1019af832e0f423138c80d7b983aac176513b97da4572cc284091f6b",
    "signature": "0xf8fec56f2285233d858c1f6b8d2e8d29219a554973b72bf6998b27c379f6d43a27214d144f212fcf5d9fe999febfe950e745b24387dcaf62c44bf653ebfb95dc1b",
    "signer": "0xffE38699809fD74787DA4B1e8397af4BD3429666",
    "userId": "394456316"
  }
}