{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16468",
    "entityType": "User",
    "nonce": "0x8a55348101ad969779ee9f840ec59bcfbb7ab5e7db31e25d980ebd66f8119be1",
    "signature": "0x9f1cf019baf1c9aad4145a1a1c2770a937d7087eac834786023b4532077bc9bd02bef8b15be31021ccfee61c4d3c4cb49fe7f92aa6d25434508f00a2e8df39d51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}