{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138444",
    "entityType": "User",
    "nonce": "0x5c3a852170360c1eaef44ba1ebb1eef08195d922cf7b5ea683ef33669f8b0c67",
    "signature": "0x5bef65023615f488d893e846625668c13f053175d28617ed10c0d57adc974d49636c7ae3eff277d24b58d52ebb3d76b54b23924d6fdc55c7392eb2324e7ee19c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}