{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "346849",
    "entityType": "User",
    "nonce": "0x9509884acac7a27cc634a4330aa96b287c0f41e95542ea74c696d28e0d0926ee",
    "signature": "0x3859fcd55e26b17df113f43862acb9926cfcf8075fd677a3325005d0a0d0247371bd54d68ce6beaa94c60e13afa0af37e7fb71a2f1fed045be87420c726b3d0f1c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}