{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143490",
    "entityType": "User",
    "nonce": "0xfed7bedbc1175be88e861300a8ee6a1933df0a7cd5aa6711a401c9f3eed6a1f7",
    "signature": "0x03b360a0a5c82d42fcf4968d26db0f382d90bad6474d10bcb29ec3c04afec4ba29fc17b5e97682b7eba7a535e850c65ad53741aa37abb5cc866b1520392d6f271b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}