{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125992",
    "entityType": "User",
    "nonce": "0xe75bf0af223e4df685536d6b3fea8772a734e323a70d7bf4e3ff976d3534d501",
    "signature": "0x71966cdfc7a2915735bc9922488ea644cd449f48517bbbc99cf41241f5cd04a30d35a0c4a62ccf68bbcdcce2e1a9f361551342b4552ba4032f7def299e44ca3b1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}