{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x94b686a4ca82f12ec86a17a06317c6fe8797cc1a74576753f4cf22950c38a115",
    "signature": "0x5333968728eb47af725befb44134cb2dc3c6ee75d945695398e0ef9564126ca96ce80f68b9ce0ece15309af4b28d21e6584399140ac420341c5d468c5c4b21911c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}