{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0x95fd8fa23ad4a4a0ee5d1c66a535688092b73deddd88e592697489b71e30e8fa",
    "signature": "0xbc222695df256b17c6d6699c0d7b5bb5a0fdeef1786661a089b20bbbe1f03564146bad9fee0c6c3b865022225e484dd02c2c318f32bedcd5da5618dd5263b4821c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}