{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31b90010291d8f4458daa3a3bab9c20e0e3a2a678f0c413d30dc1cfaf48d64d6",
    "signature": "0x0b7d746d77624f809dc9c5cf8e37f7a7887872d6b48e6b7d7d1e6125234c46540935b116fe8b0a1f6a2cd6cf1da2fa57e9d6c9fba61e5bfa2c6508bebab8a1aa1c",
    "signer": "0x4C25801412CBcDa56Ca4f94519c085af5720276b",
    "userId": "585787128"
  }
}