{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203478",
    "entityType": "User",
    "nonce": "0x865f858dbef64848a7a0ecac528afaa91974afce2669ac668f3290a75de00e15",
    "signature": "0xe00cf14f26dd1ba6ad8ac67de8f3506a276c8e13739280cd92521098fc1b89ba2929e7485048c06c1d85512610e5d28d988b8298c0703e46d52e9283eac870a91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}