{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x4da9af90685c06b2843448c447704da74f888011a5e273a9cebd27bf05edb5b4",
    "signature": "0xe9e1895b392bb3cacc3b32560ae096c50798c96bb41670678485002421226aaf187746b35c0eafe7903c081187dcbbf361136555ec756156ba589fd7cb705f7a1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}