{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74493",
    "entityType": "User",
    "nonce": "0x4a84adc9e43881975021ed9700013ff3a6dbe223168d0f1f05aee892d68f600f",
    "signature": "0xec580c8f29703d2d4361de70be75b5da3651880fdefacaecee4eedf74bce67943e08748a636669e1729a7120f4858db8733e5b18f5e194459ff900db81c9dc1c1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}