{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673086453",
    "entityType": "User",
    "nonce": "0x10c5b8433d710031efa336b976bd396586373ae93c25306b48a22367a27554b2",
    "signature": "0xaaf19df536bc511560c4d71169d654245223119cbd0ea57789aa9559ef76daa57b85787bf6983550e189b94ea18fd9b25f297765425fb75ff73ef3c753c60cd21b",
    "signer": "0x28a91687f22d454063c52F6D9d9e6de3A0f3c09E",
    "userId": "190634058"
  }
}