{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57da4880ff4abfb53cb34d92cb866573f5515dc92b724ba4ba5c9b41cdc0a18f",
    "signature": "0x338a6f38b72aaa931196ee5d340000ead3c36de2e56226ca56e612363c05ab134f6c8d37b1bcf7a8e004672b7ef19f9a8049dad2a8c0c45efe5621b4602102281c",
    "signer": "0x42C591B0A2E2040c36AC091172c4B337Cd4ff814",
    "userId": "965336999"
  }
}