{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "898121894",
    "entityType": "User",
    "nonce": "0xe411ab49e698a8de93c0060fb730ca46b61af32aca7edb712ec5782e3e1a450e",
    "signature": "0x91af2fd816211d3870a2329551a8e585f1d82f00fbf57066a380acde536370e56d14939c5dec2e26199d744fba9825ac374ee3b1d73dc61ba8bfd5bda1c125d91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}