{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74667",
    "entityType": "User",
    "nonce": "0xd9ed514db6c2ade47b2f86a4b040145e8456aa6e8d71578c28cd4c67c37ea034",
    "signature": "0xf9592a43886c5392fafe54c62b2200f02724663345b530c3ee09c4c3add8bea230fcc7326b46b7af453198120b9b2b25a9c64c5c554d1caab701a7d534b0f5151c",
    "signer": "0x3CE226b3CA677B312E9396cc48d4008c70545091",
    "userId": "550328673"
  }
}