{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9c79f6ac0f702140eb0b0b6683ad71dd8d74915dda4f1d19848e12e2af441d9f",
    "signature": "0x3df9714d7ea089d093a8fdda14b293a3af56cdef76f20d6d23da55462a621cdc367048a28176adbda37397a15622c38756dbd6b6ca0a34b8f0d5cf6ade4468ab1b",
    "signer": "0x7213Eae70B841D513F902f7Be4A8c1DF7D4BC960",
    "userId": "626546972"
  }
}