{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142343",
    "entityType": "User",
    "nonce": "0x465d7505f006c2e11c9d788aeffa9a8f8cf070abc5e90a463a095bae34d8a74d",
    "signature": "0x032f5e5ec515d89bf0ec4ca2e96ff5d5d27e7901ef5f86af7555b3a01eff9417067ab605ee498cecc006cac855671a39273e387ccc0a54300a601c5eaf30215d1b",
    "signer": "0x280fe76eF86eFDe627e56824E10aC8C1c4c68aD5",
    "userId": "142643"
  }
}