{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8ac289afec6443d49dee6c06d10acb24087a85057af630d1d39241d69c761bed",
    "signature": "0x4e9795622111a081df7b051114f1035850834e49cf8c45063be5f763afb0c2990186347d29d8f76aff9b2e1a0eba3ca00f0d03de3d87c2d1af3932074c6c10c21b",
    "signer": "0x2488A83c71384c84eB9fA77D73306dC024EB3B02",
    "userId": "193733863"
  }
}