{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923900750",
    "entityType": "User",
    "nonce": "0xf0db160e58f8b246a31366268b88695dc4dcf91de91444932357ad5fa1f61cae",
    "signature": "0x5b7ac7066fa3292b80219061354feab9489011b5ba32579f603431cf7e1568e165bcf9ff3738ad9558594dc2a1f7a2c00add26543394b251f71aad303ffc8e281c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}