{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1689148",
    "entityType": "User",
    "nonce": "0xac407a4e81aade0f7c9b1b83a0cb25bc1140ad38f3f9649c3d78233044334265",
    "signature": "0x06221db87a9847dcba619dda4ee1ddf750d759ddb649ea3403fbff938c79b9632d7afc43a122e8b275845aed9ae6d40a58595b4d75367ebce8ba1e2f115d3ea91c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}