{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "809637605",
    "entityType": "User",
    "nonce": "0x4c7e0fe1a5359b2a213d3ecd3850cd927a5075bf34ac962311298d24120739af",
    "signature": "0x4f602664336053cb5d16a29ced0fb829f1877a8d352267fdb3889b18524a1fbe0fd6c0b8f4bb316afde0981ac7da56afa2d699c39aadcd960cb8e641780ef59d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}