{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x159aab2e4f97d1a2d2f4805af705edbc8d20707f49a680d8250fa574025cca99",
    "signature": "0x171f3dcf3badd2c107e8d8737ddc1177c788fe61ce00278e34aa9a8b5a20de1c7f67b0709c9eb5820bbdad2df945e14e0272b53a8676de2efcea20a708c254ef1c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}