{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151790",
    "entityType": "User",
    "nonce": "0xff291258c7e455c933fae3bd4029270a26f2623f536fa482ee5a0a5f2f62d5b0",
    "signature": "0xcdecf9e8ee737939df3262db5cb468c7d992714b413ba43598616768b4b233851f031296495a4fdda91bd4c5a04ab3da73e357c5e0ab99eeb392bb1ac404c9eb1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}