{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4444fcee668377cfb885f84a638be7cb0fb2fe4391863dde0ee56fc5710ada95",
    "signature": "0x0b98a9ebcc64d3affd3dee13810c6670bec8ae9c966e0a2c30f7d2afa662c1724e86f4092428cddf1e19eb06a72af988a9c48671d6297e0d2c2abbaad0918a261b",
    "signer": "0xe3CB71b751f74f3D722bD4380d6Eed12dF2c7289",
    "userId": "744806110"
  }
}