{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787100055",
    "entityType": "User",
    "nonce": "0x0a157052f4d973fc518ad4b054ffa869ae7cb67a8ded600fb5c6cdd349083d9e",
    "signature": "0x60be41d7c156ce20bf6ef8629e64fb8fc1f79fa5c54083ff7fcd6d809017c63f220a6562dcca603039578aa21fcbdd38fb7ed461d7c9d9b0f9b5e63e865edd0b1b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}