{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4c4e168335c3529849125f880fc9e8a48d08b7d0c564edd60048870bbd7e4408",
    "signature": "0x548146039631ec4a2a869f4b33723c296000838d1abe9b0f8e1219b0593bd45f3fbdddda72b79a65ef6cbe968f68268280de1c10fcac7e0f2830ece75d4897a51b",
    "signer": "0x79375D6d575fE2a038916001077f90CbAE12d4A9",
    "userId": "973873678"
  }
}